| 43 Things | Goal setting and achievement | 02005-01-011st January 2005 | &100000000030000000000003,000,000[2] | Open | &1000000000001333200000013,332[3] |
| Academia.edu | Social networking site for academics/researchers | 02008-09-01September 2008 | &10000000000211000000000211,000[4] | Open | &100000000000060530000006,053[5] |
| Advogato | Free and open source software developers | 01999 1999 | &1000000000001357500000013,575[6] | Open | &10000000000144599000000144,599[7] |
| aNobii | Books | 02006 2006 |
| Open | &1000000000001193200000011,932[8] |
| AsianAvenue | A social network for the Asian American community | 01997 1997 |
| Open | &1000000000007585400000075,854[9] |
| aSmallWorld | European jet set and social elite world-wide | 02004-03-01March 2004 | &10000000000550000000000550,000[10] | Invite-only | &100000000000061920000006,192[11] |
| Athlinks | Running, Swimming | 02001 2001 | &10000000000139458000000139,458[12] | Open | &1000000000003712900000037,129[13] |
| Audimated.com | Independent music | 02010 2010 |
| Open | &10000000000747857000000747,857[14] |
| Badoo | General, Meet new people & dating, Popular in Europe and Latin America | 02006 2006 | &10000000133000000000000133,000,000[15] | Open to people 18 and older | &10000000000000117000000117[16] |
| Bebo | General | 02005-07-01July 2005 | &10000000117000000000000117,000,000[17] | Open to people 13 and older | &100000000000022790000002,279[18] |
| BIGADDA | Indian Social Networking Site | 02007-08-01August 2007 | &100000000030000000000003,000,000[19] | Open to people 16 and older | &1000000000001290300000012,903[20] |
| Biip.no | Norwegian community | 02005-06-01June 1, 2005 | &10000000000430000000000430,000[21] | Requires Norwegian phone number | &1000000000004246800000042,468[22] |
| BlackPlanet | African-Americans | 01999-09-01September 1, 1999 | &1000000002000000000000020,000,000[23] | Open | &100000000000058630000005,863[24] |
| Blauk | Anyone who wants to tell something about a stranger or acquaintance. | 02010 2010 |
| Open to people 13 and older. | &10000000000463796000000463,796[25] |
| Blogster | Blogging community | 02005-11-24November 24, 2005 | &1000000000008557900000085,579[26] | Open | &1000000000001014400000010,144[27] |
| Bolt.com | General | 01996 1996 |
| Open | &10000000000111069000000111,069[28] |
| Busuu | Language learning community | 02008-05-16May 16, 2008 | &100000000040000000000004,000,000[29] | Open | &100000000000043300000004,330[30] |
| Buzznet | Music and pop-culture | 02005 2005 | &1000000001000000000000010,000,000[31] | Open | &100000000000012270000001,227[32] |
| CafeMom | Mothers | 02006-12-01December 2006 | &100000000012500000000001,250,000[33] | Open to moms and moms-to-be | &100000000000014920000001,492[34] |
| Cake Financial | Investing | 02007-09-17September 17, 2007 |
| Open | &10000000000481922000000481,922[35] |
| Care2 | Green living and social activism | 01998 1998 | &100000000099619470000009,961,947[36] | Open | &100000000000018830000001,883[37] |
| CaringBridge | Not for profit providing free websites that connect family and friends during a serious health event, care and recovery.[38] | 02012
| &100000000095000000000009,500,000[39] | Open to people 18 and older[40] | [41] |
| Cellufun | Mobile social game network, Number 8 US mobile website[42] | 02007 2007 | &100000000030000000000003,000,000[43] | Open to people 14 and older | &10000000000115511000000115,511[44] |
| Classmates.com | School, college, work and the military | 01995 1995 | &1000000005000000000000050,000,000[45] | Open to people 18 and older[46] | &100000000000029610000002,961[47] |
| Cloob | General. Popular in Iran | 02004 2004 |
| Open | &10000000000000914000000914[48] |
| CouchSurfing | Worldwide network for making connections between travelers and the local communities they visit. | 02003 2003 | &100000000029674210000002,967,421[49] | Open | &100000000000018210000001,821[50] |
| CozyCot | East Asian and Southeast Asian women | 02001 2001 | &10000000000150000000000150,000[51] | Open | &100000000000037110000003,711[50] |
| Cross.tv | Faith Based social network for Christian believers from around the world | 02008 2008 | &10000000000450000000000450,000[52] | Open | &1000000000003171600000031,716[53] |
| Crunchyroll | Anime and forums. | 02006 2006 |
| Open | &100000000000051530000005,153[54] |
| Cyworld | General. Popular in South Korea. | 01999 1999 | &1000000002400000000000024,000,000[55] | Open | &100000000000010200000001,020[56] |
| DailyBooth | Photo-blogging site where users upload a photo every day | 02009-02-13February 13, 2009 |
| Open | &100000000000050140000005,014[57] |
| DailyStrength | Medical & emotional support community - Physical health, Mental health, Support groups | 02007-11-04November 4, 2007 |
| Open | &1000000000002205400000022,054[58] |
| Decayenne | European and American social elite | 02001 2001 |
| Invite-only | &100000000012639430000001,263,943[59] |
| delicious | Social bookmarking allowing users to locate and save websites that match their own interests | 02003-09-01September 2003 | &100000000088229210000008,822,921[60] | Open | &10000000000000272000000272[61] |
| deviantART | Art community | 02000-08-07August 7, 2000 | &100000000090409620000009,040,962[62] | Open | &10000000000000126000000126[63] |
| Diaspora* | Decentralized, privacy aware, general (open source) | 02012-11-27November, 2010 | &10000000000370000000000370,000+[64][65] | Open | &1000000000002494700000024,947[66][67] |
| Disaboom | People with disabilities (Amputee, cerebral palsy, MS, and other disabilities) | 02012
|
| Open | &10000000000275698000000275,698[68] |
| Dol2day | Politic community, Social network, Internet radio (German-speaking countries) | 02012
| &1000000000004020000000040,200[69] | Open | &10000000000887047000000887,047[70] |
| DontStayIn | Clubbing (primarily UK) | 02012
|
| Open | &1000000000005409500000054,095[71] |
| Draugiem.lv | General (primarily LV, LT, HU) | 02012
| &100000000026004660000002,600,466[26] | Invitation only | &100000000000029150000002,915[72] |
| douban | Chinese Web 2.0 website providing user review and recommendation services for movies, books, and music. | 02005 2005 | &1000000004685000000000046,850,000[73] | Open | &10000000000000119000000119[74] |
| DXY.cn | Chinese online community for physicians, health care professionals, pharmacies and facilities | 02000 2000[75] | &100000000020000000000002,000,000[76] | Open | &1000000000001400500000014,005[77] |
| Elftown | Community and wiki around Fantasy and sci-fi. | 02012
| &10000000000185000000000185,000[78] | Open, approval needed | &1000000000004327700000043,277[79] |
| Elixio | High-net-worth individuals, young business executives | 02007-07-01July 2007 | &1000000000004000000000040,000 [80] | Invite-only | &10000000000153646000000153,646[81] |
| Epernicus | For research scientists | 02012
|
| Open | &10000000000528083000000528,083[82] |
| Eons.com | For baby boomers and mature internet users age 40 and beyond. | 02012
|
| Open to people age 40 years and older | &1000000000003424000000034,240[83] |
| Experience Project | Life experiences | 02012
|
| Open | &100000000000034520000003,452[84] |
| Exploroo | Travel Social Networking. | 02012
|
| Open | &10000000000209868000000209,868[85] |
| Facebook | General. | 02004-02-01February 2004 | &10000000800000000000000800,000,000+[86] | Open to people 13 and older | &100000000000000020000002[87] |
| Faceparty | General. Popular UK. | 02012
| &10000000000200000000000200,000[88] | Invitation only to people 18 and older | &1000000000002876000000028,760[89] |
| Faces.com | Adult Social Network, Mainly UK & USA | 02011 2011 | &10000000000700000000000700,000[90] | Open to people 18 and older worldwide | &10000000000159693000000159,693[91] |
| Fetlife | People who are into BDSM | 02008-01-01January 2008 | &100000000012000000000001,200,000[92] | Open to people "of legal age to see adult content" | &100000000000055130000005,513[93] |
| FilmAffinity | Movies and TV Series | 02002 2002 | &10000000000250000000000250,000[94] | Open | &100000000000039160000003,916[95] |
| FledgeWing | Entrepreneural community targeted towards worldwide university students | 02012
|
| Open to university students | &100000000017939900000001,793,990[96] |
| Flixster | Movies | 02007 2007 | &1000000006300000000000063,000,000[97] | Open to people 13 and older | &100000000000010180000001,018[98] |
| Flickr | Photo sharing, commenting, photography related networking, worldwide | 02004-02-01February 2004 | &1000000003200000000000032,000,000[99] | Open to people 13 and older (Yahoo! Login) | &1000000000000003100000031[100] |
| Focus.com | Business to Business, worldwide | 02005 2005 | &10000000000850000000000850,000[101] | Open to people 13 and older | &1000000000001149500000011,495[102] |
| Fotki | Photo sharing, video hosting, photo contests, journals, forums, flexible privacy protection, friend's feed, audio comments and unlimited custom design integration. | 01998-10-01October 1998 | &100000000016325650000001,632,565 | Open | &100000000000053670000005,367[103] |
| Fotolog | Photoblogging. Popular in South America and Spain | 02002 2002 | &1000000002000000000000020,000,000[104] | Open | &100000000000011940000001,194[105] |
| Foursquare | Location based mobile social network | 02009 2009 | &1000000001000000000000010,000,000[106] | Open | &10000000000000625000000625[107] |
| Friends Reunited | UK based. School, college, work, sport and streets | 02000-07-01July 2000 | &1000000001900000000000019,000,000[108] | Open to people 13 and older | &1000000000001023100000010,231[109] |
| Friendster | General. Popular in Southeast Asia. No longer popular in the western world | 02002 2002 | &1000000009000000000000090,000,000[110] | Open to people 16 and older. | &10000000000000979000000979[111] |
| Frühstückstreff | General | 02001-07-01July 2001 | &1000000000001480000000014,800[citation needed] | Open | &100000000012531550000001,253,155[112] |
| Fubar | dating, an "online bar" for 18 and older | 02007-10-01October 2007 | &100000000012000000000001,200,000[113] | Open to people 18+ | &100000000000094760000009,476[114] |
| Gaia Online | Anime and games. Popular in USA, Canada and Europe. Moderately popular around Asia. | 02012
| &1000000002352366300000023,523,663[115] | Open to people 13 and older | &100000000000010710000001,071[116] |
| GamerDNA | Computer and video games | 02006-09-21September 21, 2006 | &10000000000310000000000310,000[117] | Open | &1000000000002288700000022,887[118] |
| Gather.com | Article, picture, and video sharing, as well as group discussions | 02012
| &10000000000465000000000465,000[119] | Open | &100000000000039740000003,974[120] |
| Gays.com | Social network for LGBT community, Guide for LGBT bars, restaurants, clubs, shopping | 02008-05-16May 16, 2008 | &10000000000100000000000100,000[121] | Open, Global | &1000000000007466400000074,664[122] |
| Geni.com | Families, genealogy | 02007-01-16January 16, 2007 | &1000000001500000000000015,000,000[123] | Open | &100000000000058150000005,815[124] |
| GetGlue | Social network for entertainment | 02008-10-28October 28, 2008 | &100000000020000000000002,000,000[125] | Open | &100000000000041240000004,124[126] |
| Gogoyoko | Fair play in Music - Social networking site for musicians and music lovers | 02012
|
| Invite only while in beta | &10000000000119272000000119,272[127] |
| Goodreads | Library cataloging, book lovers | 02006-12-01December 2006 |
| Open | &100000000000025430000002,543[128] |
| Goodwizz | Social network with matchmaking and personality games to find new contacts. Global, based in France. | 02010-10-01October 2010 | &10000000000110000000000110,000[129][130] | Open | &10000000000214214000000214,214[131] |
| Google+ | General | 02011-06-28June 28, 2011 | &10000000100000000000000100,000,000[132] | General, Open | NA (Alexa only records data for Second-level domains) |
| GovLoop | for people in and around government | 02012
|
|
| &1000000000009185200000091,852[133] |
| Grono.net | Poland | 02012
| &100000000020000000000002,000,000[citation needed] | Open | &100000000000029580000002,958[134] |
| Habbo | General for teens. Over 31 communities worldwide. Chat Room and user profiles. | 02000-08-01August 2000 | &10000000200000000000000200,000,000[135][136][137] | Open to people 13 and older | &100000000000065450000006,545[138] |
| hi5 | General. Popular in India, Mongolia, Thailand, Romania, Jamaica, Central Africa, Portugal and Latin America. Not very popular in the USA. | 02003 2003 | &1000000008000000000000080,000,000[139] | Open to people 13 and older. | &10000000000000443000000443[140] |
| Hospitality Club | Hospitality | 02012
| &10000000000328629000000328,629[141] | Open | &1000000000003825800000038,258[142] |
| Hotlist | Geo-Social Aggregator rooted in the concept of knowing where your friends are, were, and will be. | 02012
| &1000000000008000000000080,000[143] | Open | &1000000000002824100000028,241[144] |
| HR.com | Social networking site for Human Resources professionals | 01999 1999 | &10000000000194000000000194,000[145] | Open | &1000000000006004800000060,048[146] |
| Hub Culture | Global influencers focused on worth creation | 02002-11-01November 2002 | &1000000000002000000000020,000[147] | Invite-only | &10000000000515308000000515,308[148] |
| Hyves | General, mostly popular in the Netherlands. | 02004-09-01September 2004 | &1000000001009700000000010,097,000[149] | Open | &10000000000000658000000658[150] |
| Ibibo | Talent based social networking site that allows to promote one's self and also discover new talent. Most popular in India. | 02012
| &100000000035000000000003,500,000[151] | Open | &10000000000000695000000695[152] |
| Identi.ca | Twitter-like service popular with hackers and software freedom advocates. | 02012
| &10000000000395695000000395,695[citation needed] | Open | &100000000000038220000003,822[153] |
| Indaba Music | Online collaboration for musicians, remix contests, and networking. | 02012
| &10000000000350000000000350,000[154] | Open, Global | &1000000000005506200000055,062[155] |
| IRC-Galleria | Finland | 02012
| &10000000000505000000000505,000[156] | Open to Finnish speaking people 12 and older | &100000000000033020000003,302[157] |
| italki.com | Language learning social network. 100+ languages. | 02012
| &10000000000500000000000500,000[158] | Open, Global | &1000000000002993900000029,939[159] |
| Itsmy | Mobile community worldwide, blogging, friends, personal TV-shows | 02012
| &100000000025000000000002,500,000[160] |
| &10000000000206437000000206,437[161] |
| iWiW | Hungary | 02002-04-14April 14, 2002 | &100000000040000000000004,000,000[162] | Invite-only | &10000000000000532000000532[163] |
| Jaiku | General. Microblogging. Owned by Google | 02006-02-01February 2006 |
| Open to people 13 and older | &1000000000001566100000015,661[164] |
| Kaixin001 | General. In Simplified Chinese; caters for mainland China users | 02012
|
| Open to the General Public | &10000000000000183000000183[165] |
| Kiwibox | General. | 01999 1999 | &100000000024000000000002,400,000[166] | Open to people 13 and older | &10000000000104563000000104,563[167] |
| Lafango | Talent-Focused media sharing site | 02012
|
| Open, Global | &10000000000151301000000151,301[168] |
| LaiBhaari | Marathi social networking | 02010 2010 | &10000000000250000000000250,000 | Open | &1000000000001950300000019,503[169] |
| Last.fm | Music | 02002 2002 | &1000000003000000000000030,000,000[170] | Open | &10000000000000552000000552[171] |
| LibraryThing | Book lovers | 02005-08-29August 29, 2005 | &100000000013000000000001,300,000[172] | Open to people 13 and older | &100000000000082430000008,243[173] |
| Lifeknot | Shared interests, hobbies | 02012
|
| Open to people 18 and older | &10000000000602117000000602,117[174] |
| LinkedIn | Business and professional networking | 02003-05-01May 2003 | &10000000120000000000000120,000,000[175] | Open to people 18 and older | &1000000000000001300000013[176] |
| LinkExpats | Social networking website for expatriates. 100+ countries. | 02012
|
| Open, Global | &100000000016684840000001,668,484[177] |
| Listography | Lists. Autobiography | 02012
|
| Open | &10000000000197009000000197,009[178] |
| LiveJournal | Blogging. Popular in Russia and among the Russian-speaking diaspora abroad. | 01999-04-15April 15, 1999 | &1000000001756497700000017,564,977[179] | Open (OpenID) | &1000000000000007600000076[180] |
| Livemocha | Online language learning | 02012
| &100000000050000000000005,000,000[181] | Open | &100000000000040790000004,079[182] |
| LunarStorm | Sweden | 02012
| &100000000012000000000001,200,000[183] | Open | &1000000000006587400000065,874[184] |
| Makeoutclub | General | 01999-08-09August 9, 1999 |
| Open | &10000000000723381000000723,381[185] |
| MEETin | General | 02012
|
| Open | &10000000000173717000000173,717[186] |
| Meetup | General. Used to plan offline meetings for people interested in various activities | 02012
|
| Open to people 18 and older | &10000000000000739000000739[187] |
| Meettheboss | Business and Finance community, worldwide. | 02012
|
| Open | &10000000000107180000000107,180[188] |
| mixi | Japan | 02000-10-25October 25, 2000 | &1000000002432316000000024,323,160[189] | Open | &10000000000000140000000140[190] |
| mobikade | mobile community, UK only | 02012
|
| Open to people 18 and older | &100000000018517280000001,851,728[191] |
| MocoSpace | mobile community, worldwide | 02012
| &100000000030000000000003,000,000[192] | Open to people 14 and older | &100000000000036850000003,685[193] |
| MOG | Music | 02012
|
| Open to people 14 and older | &100000000000042210000004,221[194] |
| MouthShut.com | Social Network, social media, consumer reviews | 02012
|
| Open | &100000000000025450000002,545[195] |
| Mubi (website) | Auteur cinema | 02012
| &10000000000200000000000200,000 | Open | &1000000000002564800000025,648[196] |
| Multiply | "Real world" relationships. Popular primarily in Asia. | 02012
| &1000000001000000000000010,000,000[197] | Open to people 13 and older. | &10000000000000382000000382[198] |
| MyAnimeList | Anime themed social community | 02012
| &10000000000160000000000160,000[199] | Open to people 13 and older | &100000000000060960000006,096[200] |
| MyHeritage | family-oriented social network service | 02012
| &1000000003000000000000030,000,000 [201] | Open | &100000000000029530000002,953[202] |
| MyLife | Locating friends and family, keeping in touch (formerly Reunion.com) | 02012
| &1000000005100000000000051,000,000[203] | Open | &100000000000014810000001,481[204] |
| My Opera | Blogging, mobile blogging, photo sharing, connecting with friends, Opera Link and Opera Unite. Global | 02012
| &100000000073000000000007,300,000[205] | Open | NA (Alexa only records data for second-level domains) |
| Myspace | General | 02003-08-01August 2003 | &10000000100000000000000100,000,000+[206][207] | Open to ages 13 and older. | &10000000000000131000000131[208] |
| myYearbook | General, Charity | 02012
| &1000000002000000000000020,000,000[209] | Open to age 13 and up & Grades 9 and up | &10000000000000851000000851[210] |
| Nasza-klasa.pl | School, college and friends. Popular in Poland | 02012
| &1000000001100000000000011,000,000[211] | Open | &1000000000004096100000040,961[212] |
| Netlog | General. Popular in Europe, Turkey, the Arab World and Canada's Québec province. Formerly known as Facebox and Redbox.[213] | 02012
| &1000000007000000000000070,000,000[214] | Open to people 13 and older | &10000000000000296000000296[215] |
| Nettby | Norwegian Community | 02006-09-14September 14, 2006 |
| Open | &100000000000027190000002,719[216] |
| Nexopia | Canada | 02012
| &100000000014000000000001,400,000[217] | Open to people 13 and older [218] | &1000000000002407100000024,071[219] |
| NGO Post | Non-Profit news sharing and networking, mainly in India | 02012
| &1000000000001500000000015,000[220] | Open | &1000000000007013400000070,134[221] |
| Ning | Users create their own social websites and social networks | 0Error: Invalid time.2005 (Networks 2007) |
| Open to people 13 and older | &10000000000000273000000273[222] |
| Odnoklassniki | Connect with old classmates. Popular in Russia and former Soviet republics | 02012
| &1000000004500000000000045,000,000[223] | Open | &10000000000000104000000104[224] |
| OneClimate | Not for Profit Social networking and Climate Change | 02012
|
| Open to People of all ages and locations | &10000000000307773000000307,773[225] |
| OneWorldTV | Not for Profit Video sharing and social networking aimed at people interested in social issues, development, environment, etc. | 02012
|
| Open | &1000000002743422700000027,434,227[226] |
| Open Diary | First online blogging community, founded in 1998 | 01998 1998 | &100000000050000000000005,000,000[227] | Open to people 13 and older | &1000000000003929000000039,290[228] |
| Orkut | General. Owned by Google Inc. Popular in India and Brazil.[229] | 02004-01-22January 22, 2004 | &10000000100000000000000100,000,000[230] | Open to people 18 and older, (Google login) | &10000000000000106000000106[231] |
| OUTeverywhere | Gay/LGBTQ Community | 02012
|
| Open | &10000000000329887000000329,887[232] |
| Passportstamp | Travel | 02012
|
| Open | &10000000000366598000000366,598[233] |
| PatientsLikeMe | Online community for patients with life-changing illnesses to find other patients like them, share their data with others, and learn more about their condition to improve their outcome. | 02006 2006 | &10000000000109587000000109,587[234] | Open to people 13 years and up | &1000000000005796200000057,962[235] |
| Partyflock | Dutch virtual community for people interested in house music and other electronic dance music | 02001-11-10November 10, 2001 | &10000000000321125000000321,125 | Open to people 18 years and up | &100000000000072260000007,226[236] |
| Pingsta | Collaborative platform for the world's Internetwork Experts | 02012
|
| Invite-only, only Internet Experts | &100000000016689550000001,668,955[237] |
| Pinterest | Online pinboard for organizing and sharing things you love | 02011 2011 |
| Invite-only | &1000000000000008800000088[238] |
| Plaxo | Aggregator | 02012
| &1000000001500000000000015,000,000[239] | Open | &100000000000015330000001,533[240] |
| Playahead | Swedish, Danish teenagers | 02012
|
| Closed | &1000000000006308100000063,081[241] |
| PureVolume | Connecting indie music bands and listeners, through music sharing and social networking | 02003 2003 |
| Open | &1000000000002082200000020,822[242] |
| Playfire | Computer and video games |
|
| Open to people 13 and older | &1000000000006255500000062,555[243] |
| Playlist.com | General, Music | 02012
|
| Open to people over 13 | &100000000000043400000004,340[244] |
| Plurk | Micro-blogging, RSS, updates. Very popular in Taiwan | 02012
|
| Open | &100000000000010720000001,072[245] |
| Present.ly | Enterprise social networking and micro-blogging | 02012
|
| Open | &100000000048937110000004,893,711[246] |
| Qapacity | A a business-oriented social networking site and a business directory | 02012
|
| Open to people 16 and older | &1000000000009684700000096,847[247] |
| Quechup | General, friendship, dating | 02007 2007 |
| Open to those over 16 | &10000000000150757000000150,757[248] |
| Qzone | General. In Simplified Chinese; caters for mainland China users | 02012
| &10000000480000000000000480,000,000[249][250] | Open to the general public | NA (Alexa only records data for second-level domains) |
| Raptr | Video games | 02012
|
| Open | &1000000000002566400000025,664[251] |
| Ravelry | Knitting and crochet | 02012
| &100000000018144600000001,814,460[252] | Open | &100000000000033870000003,387[253] |
| Renren | Significant site in China. Was known as 校内 (Xiaonei) until August 2009. | 02012
| &10000000160000000000000160,000,000[254] | Open | &1000000000000008300000083[255] |
| ResearchGate | Social network for scientific researchers | 02012
| &100000000010000000000001,000,000[256] | Open | &1000000000002309500000023,095[257] |
| ReverbNation.com | Social network for musician and bands | 02012
| &10000000000500000000000500,000[258] | Open to people 16 and older | &100000000000044220000004,422[259] |
| Ryze | Business | 02012
| &10000000000500000000000500,000[260] | Open | &1000000000001983900000019,839[261] |
| ScienceStage | Science-oriented multimedia platform and network for scientists | 02012
|
| Open | &1000000000002680400000026,804[262] |
| Scispace.net | Collaborative network site for scientists | 02012
|
| By invitation, but can request an invitation | &100000000012317950000001,231,795[263] |
| ShareTheMusic | Music Community. Sharing and listening to music for free and legally | 02012
|
| Open | &10000000000471712000000471,712[264] |
| Shelfari | Books | 02006-10-11October 11, 2006 |
| Open | &1000000000001968100000019,681[265] |
| Skoob | Collaborative social network for Brazilian readers | 02009 2009 | &10000000000420000000000420,000[266] | Open | &1000000000002760000000027,600[267] |
| Skyrock | Social Network in French-speaking world | 02012
| &1000000002200000000000022,000,000[268] | Open | &10000000000000437000000437[269] |
| Social_Life_(website) | Brazilian jet set and social elite world-wide | 02008 2008 | &10000000000550000000000550,000[270] | Invite-only | &10000000000154533000000154,533[271] |
| SocialVibe | Social Network for Charity | 02012
| &10000000000435000000000435,000[citation needed] | Open | &1000000000004192700000041,927[272] |
| Sonico.com | General. Popular in Latin America and Spanish and Portuguese speaking regions. | 02012
| &1000000001700000000000017,000,000[273][274] | Open to people 13 and older | &10000000000000507000000507[275] |
| SoundCloud | Repository of original music pieces and networking. | 02012
| &100000000010000000000001,000,000[276] | Open | &10000000000000374000000374[277] |
| Stickam | Live video streaming and chat. | 02012
| &100000000020000000000002,000,000[278] | Open | &100000000000027420000002,742[279] |
| StudiVZ | University students, mostly in the German-speaking countries. School students and those out of education sign up via its partner sites schülerVZ and meinVZ. | 02012
| &1000000001700000000000017,000,000[280] | Open | &100000000000013180000001,318[281] |
| Students Circle Network | A Social Network connecting students, teachers and institutions to course resources, study groups and learning spaces. | 02010-12-01December 2010 |
| Open | &10000000000605000000000605,000[282] |
| StumbleUpon | Stumble through websites that match your selected interests | 02012
| &1000000001060000000000010,600,000[283] | Open | &10000000000000108000000108[284] |
| Tagged | General. | 02012
| &10000000100000000000000100,000,000[285] | Open | &10000000000000281000000281[286] |
| TalentTrove | Online Talent Network | 02012
|
| Open | &1000000000002117700000021,177[287] |
| Talkbiznow | Business networking | 02012
|
| Open | &10000000000283770000000283,770[288] |
| Taltopia | Online artistic community | 02012
|
| Open | &1000000000005275900000052,759[289] |
| Taringa! | General | 02012
| &1000000001100000000000011,000,000[290] | Open to people 13 and older | &10000000000000137000000137[291] |
| TeachStreet | Education / Learning / Teaching - More than 400 subjects | 02012
|
| Open | &1000000000006149200000061,492[292] |
| TermWiki | Learning / Languages / Translation - 1.2m terms in more than 1300 subjects | 02010-05-01May 2010 |
| Open | &1000000000001618200000016,182[293] |
| The Sphere (social network) | A Private Online Social Luxury Network with Exclusive Personalized Services | 02008-12-01December 2008 | &100000000000013000000001,300[294] | Invite-only | &100000000019017930000001,901,793[295] |
| TravBuddy.com | Travel | 02005 2005 | &100000000015880000000001,588,000[296] | Open to people 18 and older | &1000000000001178900000011,789[297] |
| Travellerspoint | Travel | 02002 2002 | &10000000000310000000000310,000[298] | Open | &1000000000001148600000011,486[299] |
| tribe.net | General | 02012
|
| Open | &100000000000057060000005,706[300] |
| Trombi.com | French subsidiary of Classmates.com | 02012
| &100000000044000000000004,400,000[301] |
| &100000000000072830000007,283[302] |
| Tuenti | Spanish-based university and High School social network. Very Popular in Spain | 02012
| &1000000001200000000000012,000,000[303] | Invite-only | &10000000000000730000000730[304] |
| Tumblr | General. Micro-blogging, RSS | 02007 2007 |
| Open | &1000000000000004600000046[305] |
| Twitter | General. Micro-blogging, RSS, updates | 02006-07-15July 15, 2006 | &10000000300000000000000300,000,000[306] | Open | &100000000000000090000009[307] |
| Vkontakte | Social Network for Russian-speaking world including former Soviet republics. | 02006-09-01September 2006 | &10000000110578500000000110,578,500[308] | Open | &1000000000000004400000044[309] |
| Vampirefreaks.com | Gothic and industrial subculture | 01999 1999 | &100000000019310490000001,931,049[310] | Open to users 13 and over | &100000000000075770000007,577[311] |
| Viadeo | Global Social Networking and Campus Networking available in English, French, German, Spanish, Italian and Portuguese | 02012
| &1000000003500000000000035,000,000[312] | Open | &10000000000000710000000710[313] |
| Virb | Social network that focuses heavily on artists, including musicians and photographers | 02007 2007 |
| Open | &1000000000002247400000022,474[314] |
| Vox | Blogging | 02012
|
| Open | &100000000000013190000001,319[315] |
| Wakoopa | For computer fans that want to discover new software and games | 02012
| &10000000000100000000000100,000[citation needed] | Open | &100000000000094200000009,420[316] |
| Wattpad | For readers and authors to interact & e-book sharing | 02012
|
| Open | &1000000000001100800000011,008[317] |
| Wasabi | General. UK-based. | 02012
|
| Open | &1000000000009518800000095,188[318] |
| WAYN | Travel and lifestyle | 02003-05-01May 2003 | &1000000001000000000000010,000,000[319] | Open to people 18 and older | &100000000000029740000002,974[320] |
| WebBiographies | Genealogy and biography | 02012
|
| Open | &10000000000734214000000734,214[321] |
| WeeWorld | Teenagers - 10 to 17 | 02012
| &1000000003000000000000030,000,000[322] | Open to ages 13 and older. | &100000000000087290000008,729[323] |
| Wellwer | Community without borders, where sharing is everything. | 02011-09-01September 2011 |
| Open to people 13 years and older | &10000000000716594000000716,594[324] |
| WeOurFamily | General with emphasis on privacy and security | 02012
|
| Open, subscription-based | &10000000000685337000000685,337[325] |
| Wer-kennt-wen | General | 02012
|
| General | &10000000000000441000000441[326] |
| weRead | Books | 02007-06-01June 2007 | &100000000040000000000004,000,000[citation needed] | Open | &1000000000008023300000080,233[327] |
| WiserEarth | Online community space for the social justice and environmental movement[328] | 02012
| &1000000000004500000000045,000[329] | Open to people 16 and older | &1000000000007714300000077,143[330] |
| Wooxie | Blogging and micro-blogging | 02012
|
| Open | &10000000000169489000000169,489[331] |
| WorkCollaboration | Users create their own social websites and social networks | 0Error: Invalid time.2009 (Networks 2011) |
| Open to all people. Private and professional network. | &10000000000000273000000273[332] |
| WriteAPrisoner.com | Site networking inmates, friends, family | 02000-09-01September 2000 | &1000000000006600000000066,000[333] | Open to people 18 years and older | &10000000000252188000000252,188[334] |
| Xanga | Blogs and "metro" areas | Unknown | &1000000002700000000000027,000,000[335] | Open | &10000000000000768000000768[336] |
| XING | Business (primarily Europe (Germany, Austria, Switzerland)) | 02012
| &1000000001110000000000011,100,000[337] | Open | &10000000000000260000000260[338] |
| Xt3 | Catholic social networking, created after World Youth Day 2008 | 02012
|
| Open | &10000000000136804000000136,804[339] |
| Yammer | Social networking for office colleagues | 02008 2008 |
| Must have company email | &100000000000037690000003,769[340] |
| Yelp, Inc. | Local Business Review and Talk | 02012
|
| Open | &10000000000000182000000182[341] |
| Zoo.gr | Greek Web Meeting point | 02004 2004 | &10000000000890000000000890,000[342] | Open | &100000000000080570000008,057[343] |
| Zooppa | Online Community for Creative Talent (host of brand sponsored advertising contests) | 02012
| &1000000000006000000000060,000[344] | Open to people 14 and older[345] | &1000000000008855500000088,555[346] |
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