List of social networking websites
| 
    
Name 
 | 
   
    
Description/Focus 
 | 
   
    
Date launched 
 | 
   
    
Registered
   users 
 | 
   
    
Registration 
 | 
   |
| 
  Goal setting and achievement | 
  
  1st January 2005 | 
  
  3,000,000[2] | 
  
  Open | 
  
  13,574[3] | 
 |
| 
  Social networking site for academics/researchers | 
  
  September 2008 | 
  
  211,000[4] | 
  
  Open | 
  
  3,872[5] | 
 |
| 
  Free
  and open source software developers | 
  
  1999 | 
  
  13,575[6] | 
  
  Open | 
  
  318,165[7] | 
 |
| 
  Books | 
  
  2006 | 
  
   | 
  
  Open | 
  
  13,131[8] | 
 |
| 
  A social network for the Asian
  American community | 
  
  1997 | 
  
   | 
  
  Open | 
  
  133,043[9] | 
 |
| 
  European jet
  set and social elite world-wide | 
  
  March 2004 | 
  
  550,000[10] | 
  
  Invite-only | 
  
  8,780[11] | 
 |
| 
  Running, Swimming | 
  
  2001 | 
  
  139,458[12] | 
  
  Open | 
  
  60,677[13] | 
 |
| 
  Independent music | 
  
  2010 | 
  
   | 
  
  Open | 
  
  656,507[14] | 
 |
| 
  General, Meet new people & dating, Popular in Europe and Latin America | 
  
  2006 | 
  
  133,000,000[15] | 
  
  Open to people 18 and older | 
  
  118[16] | 
 |
| 
  General | 
  
  July 2005 | 
  
  117,000,000[17] | 
  
  Open to people 13 and older | 
  
  4,169[18] | 
 |
| 
  Indian Social Networking Site | 
  
  August 2007 | 
  
  3,000,000[19] | 
  
  Open to people 16 and older | 
  
  42,765[20] | 
 |
| 
  Norwegian community | 
  
  June 1, 2005 | 
  
  430,000[21] | 
  
  Requires Norwegian phone number | 
  
  81,916[22] | 
 |
| 
  Black Americans | 
  
  September 1,
  1999 | 
  
  20,000,000[23] | 
  
  Open | 
  
  7,193[24] | 
 |
| 
  Anyone who wants to tell something about a stranger or acquaintance. | 
  
  2010 | 
  
   | 
  
  Open to people 13 and older. | 
  
  1,081,215[25] | 
 |
| 
  Blogging
  community | 
  
  November 24,
  2005 | 
  
  85,579[26] | 
  
  Open | 
  
  12,048[27] | 
 |
| 
  General | 
  
  1996 | 
  
   | 
  
  Open | 
  
  589,595[28] | 
 |
| 
  Language learning community (headquartered in Madrid, Spain) | 
  
  May 16, 2008 | 
  
  12,000,000[29] | 
  
  Open | 
  
  4,976[30] | 
 |
| 
  Music and pop-culture | 
  
  2005 | 
  
  10,000,000[31] | 
  
  Open | 
  
  6,955[32] | 
 |
| 
  Mothers | 
  
  December 2006 | 
  
  1,250,000[33] | 
  
  Open to moms and moms-to-be | 
  
  1,293[34] | 
 |
| 
  Green living and social activism | 
  
  1998 | 
  
  9,961,947[35] | 
  
  Open | 
  
  1,930[36] | 
 |
| 
  Not for profit providing free websites that connect family and friends
  during a serious health event, care and recovery.[37] | 
  
   | 
  
  9,500,000[38] | 
  
  Open to people 18 and older[39] | 
  
  4,279[40] | 
 |
| 
  Mobile social game network[41] | 
  
  2007 | 
  
  3,000,000[42] | 
  
  Open to people 14 and older | 
  
  737,508[43] | 
 |
| 
  School, college, work and the military | 
  
  1995 | 
  
  50,000,000[44] | 
  
  Open to people 18 and older[45] | 
  
  3,284[46] | 
 |
| 
  General. Popular in Iran | 
  
  2004 | 
  
   | 
  
  Open | 
  
  749[47] | 
 |
| 
  Worldwide network for making connections between travelers and the
  communities they visit. | 
  
  2003 | 
  
  2,967,421[48] | 
  
  Open | 
  
  2,231[49] | 
 |
| 
  East
  Asian and Southeast Asian women | 
  
  2001 | 
  
  150,000[50] | 
  
  Open | 
  
  36,959[51] | 
 |
| 
  Faith Based social network for Christian believers from around the world | 
  
  2008 | 
  
  450,000[52] | 
  
  Open | 
  
  53,394[53] | 
 |
| 
  Anime and forums. | 
  
  2006 | 
  
   | 
  
  Open | 
  
  5,721[54] | 
 |
| 
  General. Popular in South
    Korea. | 
  
  1999 | 
  
  24,000,000[55] | 
  
  Open | 
  
  1,616[56] | 
 |
| 
  Photo-blogging site where users upload a photo every day | 
  
  February 13,
  2009 | 
  
   | 
  
  Open | 
  
  5,963[57] | 
 |
| 
  Medical & emotional support community - Physical health, Mental
  health, Support groups | 
  
  November 4, 2007 | 
  
   | 
  
  Open | 
  
  10,511[58] | 
 |
| 
  Social bookmarking allowing users to locate and save websites that match
  their own interests | 
  
  September 2003 | 
  
  8,822,921[59] | 
  
  Open | 
  
  436[60] | 
 |
| 
  Art community | 
  
  August 7, 2000 | 
  
  22,000,000[61] | 
  
  Open to people 13 and older | 
  
  131[62] | 
 |
| 
  Decentralized, privacy aware, general (open source) | 
  
  November, 2010 | 
  
  370,000+[n
  1][63] | 
  
  Open | 
  
  36,792[n
  2][64] | 
 |
| 
  People with disabilities (Amputee, cerebral palsy, MS, and other
  disabilities) | 
  
   | 
  
   | 
  
  Open | 
  
  218,135[65] | 
 |
| 
  Politic community, Social network, Internet radio (German-speaking
  countries) | 
  
   | 
  
  40,200[66] | 
  
  Open | 
  
  385,237[67] | 
 |
| 
  Clubbing (primarily UK) | 
  
   | 
  
   | 
  
  Open | 
  
  86,535[68] | 
 |
| 
  General (primarily LV,
  LT, HU) | 
  
   | 
  
  2,600,466[69] | 
  
  Invitation only | 
  
  2,698[70] | 
 |
| 
  Chinese Web 2.0 website providing user review and recommendation services
  for movies, books, and music. | 
  
  2005 | 
  
  46,850,000[71] | 
  
  Open | 
  
  106[72] | 
 |
| 
  Chinese online community for physicians, health care professionals,
  pharmacies and facilities | 
  
  2000[73] | 
  
  2,000,000[74] | 
  
  Open | 
  
  8,367[75] | 
 |
| 
  Community and wiki around Fantasy and sci-fi. | 
  
   | 
  
  185,000[76] | 
  
  Open, approval needed | 
  
  43,277[77] | 
 |
| 
  High-net-worth individuals, young business executives | 
  
  July 2007 | 
  
  40,000
  [78] | 
  
  Invite-only | 
  
  393,296[79] | 
 |
| 
  For research scientists | 
  
   | 
  
   | 
  
  Open | 
  
  798,086[80] | 
 |
| 
  For baby boomers and mature internet users age 40 and
  beyond. | 
  
   | 
  
   | 
  
  Open to people age 40 years and older | 
  
  73,767[81] | 
 |
| 
  Life experiences | 
  
   | 
  
   | 
  
  Open | 
  
  2,658[82] | 
 |
| 
  Travel Social Networking. | 
  
   | 
  
   | 
  
  Open | 
  
  163,545[83] | 
 |
| 
  General: Photos, Videos, Blogs, Apps. | 
  
  February 2004 | 
  
  908,000,000+[84] | 
  
  Open to people 13 and older | 
  
  2[85] | 
 |
| 
  General. Popular UK. | 
  
   | 
  
  200,000[86] | 
  
  Invitation only to people 18 and older | 
  
  163,639[87] | 
 |
| 
  Adult Social Network, Mainly UK
  & USA | 
  
  2011 | 
  
  700,000[88] | 
  
  Open to people 18 and older worldwide | 
  
  149,839[89] | 
 |
| 
  People who are into BDSM | 
  
  January 2008 | 
  
  1,200,000[90] | 
  
  Open to people "of legal age to see adult content" | 
  
  4,131[91] | 
 |
| 
  Movies and TV Series | 
  
  2002 | 
  
  250,000[92] | 
  
  Open | 
  
  3,151[93] | 
 |
| 
  Movies and TV Series | 
  
  2009 | 
  
   | 
  
  Open | 
  
  44,630[94] | 
 |
| 
  Entrepreneural community targeted towards worldwide university students | 
  
   | 
  
   | 
  
  Open to university students | 
  
  696,513[95] | 
 |
| 
  Movies | 
  
  2007 | 
  
  63,000,000[96] | 
  
  Open to people 13 and older | 
  
  4,012[97] | 
 |
| 
  Photo sharing, commenting, photography related networking, worldwide | 
  
  February 2004 | 
  
  32,000,000[98] | 
  
  Open to people 13 and older (Yahoo! Login) | 
  
  48[99] | 
 |
| 
  Business to Business, worldwide | 
  
  2005 | 
  
  850,000[100] | 
  
  Open to people 13 and older | 
  
  12,114[101] | 
 |
| 
  Photo sharing, video hosting, photo contests, journals, forums, flexible
  privacy protection, friend's feed, audio comments and unlimited custom design
  integration. | 
  
  October 1998 | 
  
  1,632,565 | 
  
  Open | 
  
  8,011[102] | 
 |
| 
  Photoblogging. Popular in South America and Spain | 
  
  2002 | 
  
  20,000,000[103] | 
  
  Open | 
  
  3,168[104] | 
 |
| 
  Location based mobile social network | 
  
  2009 | 
  
  10,000,000[105] | 
  
  Open | 
  
  817[106] | 
 |
| 
  Blogging
  community | 
  
  July, 2007 | 
  
  50,000[107] | 
  
  Open | 
  
  85,547[108] | 
 |
| 
  Distributed, federated, privacy aware,
  open source, general | 
  
   | 
  
   | 
  
  Open | 
  
  354,946[109][n
  2] | 
 |
| 
  UK
  based. School, college, work, sport and streets | 
  
  July 2000 | 
  
  19,000,000[110] | 
  
  Open to people 13 and older | 
  
  29,239[111] | 
 |
| 
  General. Popular in Southeast Asia. No longer popular in the western
  world | 
  
  2002 | 
  
  90,000,000[112] | 
  
  Open to people 16 and older. | 
  
  12,167[113] | 
 |
| 
  General | 
  
  July 2001 | 
  
  14,800[citation needed] | 
  
  Open | 
  
  1,827,621[114] | 
 |
| 
  dating, an "online bar" for 18 and older | 
  
  October 2007 | 
  
  1,200,000[115] | 
  
  Open to people 18+ | 
  
  10,453[116] | 
 |
| 
  Anime and
  games. Popular in USA, Canada and Europe.
  Moderately popular around Asia. | 
  
   | 
  
  23,523,663[117] | 
  
  Open to people 13 and older | 
  
  6,277[118] | 
 |
| 
  Computer and video games | 
  
  September 21,
  2006 | 
  
  310,000[119] | 
  
  Open | 
  
  59,730[120] | 
 |
| 
  Travel social network | 
  
  July, 1998 | 
  
   | 
  
  Open | 
  
  87,868[121] | 
 |
| 
  Article, picture, and video sharing, as well as group discussions | 
  
   | 
  
  465,000[122] | 
  
  Open | 
  
  3,062[123] | 
 |
| 
  Social network for LGBT
  community, Guide for LGBT
  bars, restaurants, clubs, shopping | 
  
  May 16, 2008 | 
  
  100,000[124] | 
  
  Open, Global | 
  
  224,302[125] | 
 |
| 
  Families, genealogy | 
  
  January 16, 2007 | 
  
  15,000,000[126] | 
  
  Open | 
  
  5,958[127] | 
 |
| 
  Social network for entertainment | 
  
  October 28, 2008 | 
  
  2,000,000[128] | 
  
  Open | 
  
  3,735[129] | 
 |
| 
  Fair play in Music - Social networking site for musicians and music lovers | 
  
   | 
  
   | 
  
  Invite only while in beta | 
  
  145,552[130] | 
 |
| 
  Library cataloging, book lovers | 
  
  December 2006 | 
  
   | 
  
  Open | 
  
  544[131] | 
 |
| 
  Social network with matchmaking and personality games to find new
  contacts. Global, based in France. | 
  
  October 2010 | 
  
  110,000[132][133] | 
  
  Open | 
  
  597,008[134] | 
 |
| 
  General | 
  
  June 28, 2011 | 
  
  200,000,000[135] | 
  
  Open to people 13 and older [136] | 
  
  NA[n
  3] | 
 |
| 
  For people in and around government | 
  
   | 
  
   | 
  
   | 
  
  138,576[137] | 
 |
| 
  Poland | 
  
   | 
  
  2,000,000[citation needed] | 
  
  Open | 
  
  395,036[138] | 
 |
| 
  General for teens. Over 31 communities worldwide. Chat room and user
  profiles. | 
  
  August 2000 | 
  
  200,000,000[139][140][141] | 
  
  Open to people 13 and older | 
  
  15,255[142] | 
 |
| 
  General. Popular in Nepal, Mongolia, Thailand, Romania, Jamaica, Central
  Africa, Portugal
  and Latin
  America. Not very popular in the USA. | 
  
  2003 | 
  
  80,000,000[143] | 
  
  Open to people 13 and older. | 
  
  902[144] | 
 |
| 
  Hospitality | 
  
   | 
  
  328,629[145] | 
  
  Open | 
  
  99,562[146] | 
 |
| 
  Geo-Social Aggregator rooted in the concept of knowing where users'
  friends are, were, and will be. | 
  
   | 
  
  80,000[147] | 
  
  Open | 
  
  155,811[148] | 
 |
| 
  Social networking site for Human Resources professionals | 
  
  1999 | 
  
  194,000[149] | 
  
  Open | 
  
  79,591[150] | 
 |
| 
  Global influencers focused on worth creation | 
  
  November 2002 | 
  
  20,000[151] | 
  
  Invite-only | 
  
  152,756[152] | 
 |
| 
  General, mostly popular in the Netherlands. | 
  
  September 2004 | 
  
  10,097,000[153] | 
  
  Open | 
  
  2,243[154] | 
 |
| 
  Talent based social networking site that allows to promote one's self and
  also discover new talent. Most popular in India. | 
  
   | 
  
  3,500,000[155] | 
  
  Open | 
  
  1,143[156] | 
 |
| 
  Twitter-like service popular with hackers and software freedom advocates. | 
  
   | 
  
  395,695[citation needed] | 
  
  Open | 
  
  7,290[157] | 
 |
| 
  Online collaboration for musicians, remix contests, and networking. | 
  
   | 
  
  350,000[158] | 
  
  Open, Global | 
  
  45,039[159] | 
 |
| 
  Finland | 
  
   | 
  
  505,000[160] | 
  
  Open to Finnish speaking people 12 and older | 
  
  36,982[161] | 
 |
| 
  Language learning social network. 100+ languages. | 
  
   | 
  
  500,000[162] | 
  
  Open, Global | 
  
  18,956[163] | 
 |
| 
  Mobile community worldwide, blogging, friends, personal TV-shows | 
  
   | 
  
  2,500,000[164] | 
  
   | 
  
  770,100[165] | 
 |
| 
  Hungary | 
  
  April 14, 2002 | 
  
  4,000,000[166] | 
  
  Invite-only | 
  
  3,831[167] | 
 |
| 
  General. Microblogging. Owned by Google | 
  
  February 2006 | 
  
   | 
  
  Open to people 13 and older | 
  
  62,910[168] | 
 |
| 
  General. In Simplified Chinese; caters for mainland China users | 
  
   | 
  
   | 
  
  Open to the General Public | 
  
  284[169] | 
 |
| 
  General. | 
  
  1999 | 
  
  2,400,000[170] | 
  
  Open to people 13 and older | 
  
  104,563[171] | 
 |
| 
  Talent-Focused media sharing site | 
  
   | 
  
   | 
  
  Open, Global | 
  
  161,778[172] | 
 |
| 
  African Social Networking Site | 
  
  April 2010 | 
  
  72,000[173] | 
  
  Open to people 13 and older | 
  
  98,346[174] | 
 |
| 
  Marathi social networking | 
  
  2010 | 
  
  250,000 | 
  
  Open | 
  
  952,782[175] | 
 |
| 
  Music | 
  
  2002 | 
  
  30,000,000[176] | 
  
  Open | 
  
  772[177] | 
 |
| 
  Book lovers | 
  
  August 29, 2005 | 
  
  1,300,000[178] | 
  
  Open to people 13 and older | 
  
  10,800[179] | 
 |
| 
  Shared interests, hobbies | 
  
   | 
  
   | 
  
  Open to people 18 and older | 
  
  1,071,686[180] | 
 |
| 
  Business and professional networking | 
  
  May 2003 | 
  
  120,000,000[181] | 
  
  Open to people 18 and older | 
  
  12[182] | 
 |
| 
  Social networking website for expatriates. 100+ countries. | 
  
   | 
  
   | 
  
  Open, Global | 
  
  800,451[183] | 
 |
| 
  Lists. Autobiography | 
  
   | 
  
   | 
  
  Open | 
  
  92,525[184] | 
 |
| 
  Blogging. Popular in Russia
  and among the Russian-speaking diaspora abroad. | 
  
  April 15, 1999 | 
  
  17,564,977[185] | 
  
  Open (OpenID) | 
  
  115[186] | 
 |
| 
  Online language learning | 
  
   | 
  
  5,000,000[187] | 
  
  Open | 
  
  4,100[188] | 
 |
| 
  General | 
  
  August 9, 1999 | 
  
   | 
  
  Open | 
  
  756,300[189] | 
 |
| 
  General | 
  
   | 
  
   | 
  
  Open | 
  
  318,979[190] | 
 |
| 
  General. Used to plan offline meetings for people interested in various
  activities | 
  
   | 
  
   | 
  
  Open to people 18 and older | 
  
  481[191] | 
 |
| 
  Business and Finance community, worldwide. | 
  
   | 
  
   | 
  
  Open | 
  
  315,513[192] | 
 |
| 
  General, Created in Response to Facebook [193] | 
  
  May 2010 | 
  
  461,200[194] | 
  
  Open | 
  
  236,663[195] | 
 |
| 
  Japan | 
  
  October 25, 2000 | 
  
  24,323,160[196] | 
  
  Open | 
  
  232[197] | 
 |
| 
  mobile community, worldwide | 
  
   | 
  
  3,000,000[198] | 
  
  Open to people 14 and older | 
  
  9,882[199] | 
 |
| 
  Music | 
  
   | 
  
   | 
  
  Open to people 14 and older | 
  
  13,955[200] | 
 |
| 
  Social Network, social media, consumer reviews | 
  
   | 
  
   | 
  
  Open | 
  
  3,340[201] | 
 |
| 
  Auteur cinema | 
  
   | 
  
  200,000 | 
  
  Open | 
  
  18,225[202] | 
 |
| 
  family-oriented social network service | 
  
   | 
  
  30,000,000
  [203] | 
  
  Open | 
  
  3,756[204] | 
 |
| 
  Locating friends and family, keeping in touch (formerly Reunion.com) | 
  
   | 
  
  51,000,000[205] | 
  
  Open | 
  
  1,765[206] | 
 |
| 
  Blogging, mobile blogging, photo sharing, connecting with friends, Opera Link
  and Opera
  Unite. Global | 
  
   | 
  
  7,300,000[207] | 
  
  Open | 
  
  NA[n
  3] | 
 |
| 
  General | 
  
  August 2003 | 
  
  100,000,000+[208][209] | 
  
  Open to ages 13 and older. | 
  
  161[210] | 
 |
| 
  General, Charity | 
  
   | 
  
  20,000,000[211] | 
  
  Open to age 13 and up & Grades 9 and up | 
  
  1,885[212] | 
 |
| 
  School, college and friends. Popular in Poland | 
  
   | 
  
  11,000,000[213] | 
  
  Open | 
  
  75,145[214] | 
 |
| 
  General. Popular in Europe, Turkey,
  the Arab World and Canada's
  Québec province. Formerly known as Facebox and Redbox.[215] | 
  
   | 
  
  70,000,000[216] | 
  
  Open to people 13 and older | 
  
  545[217] | 
 |
| 
  Canada | 
  
   | 
  
  1,400,000[218] | 
  
  Open to people 13 and older [219] | 
  
  25,241[220] | 
 |
| 
  Non-Profit news sharing and networking, mainly in India | 
  
   | 
  
  15,000[221] | 
  
  Open | 
  
  42,076[222] | 
 |
| 
  Users create their own social websites and social networks | 
  
  2005 (Networks
  2007) | 
  
   | 
  
  Open to people 13 and older | 
  
  378[223] | 
 |
| 
  Connect with old classmates. Popular in Russia and former Soviet
  republics | 
  
   | 
  
  45,000,000[224] | 
  
  Open | 
  
  65[225] | 
 |
| 
  First online blogging community, founded in 1998 | 
  
  1998 | 
  
  5,000,000[226] | 
  
  Open to people 13 and older | 
  
  28,134[227] | 
 |
| 
  General. Owned by Google Inc. Popular in India and Brazil.[228] | 
  
  January 22, 2004 | 
  
  100,000,000[229] | 
  
  Open to people 18 and older, (Google login) | 
  
  319[230] | 
 |
| 
  Gay/LGBTQ Community | 
  
   | 
  
   | 
  
  Open | 
  
  445,440[231] | 
 |
| 
  Travel | 
  
   | 
  
   | 
  
  Open | 
  
  910,603[232] | 
 |
| 
  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. | 
  
  2006 | 
  
  109,587[233] | 
  
  Open to people 13 years and up | 
  
  69,514[234] | 
 |
| 
  Dutch virtual community for people interested in house music and other
  electronic dance music | 
  
  November 10,
  2001 | 
  
  321,125 | 
  
  Open to people 18 years and up | 
  
  16,828[235] | 
 |
| 
  Collaborative platform for the world's Internetwork
  Experts | 
  
   | 
  
   | 
  
  Invite-only, only Internet Experts | 
  
  2,533,640[236] | 
 |
| 
  Online pinboard for organizing and sharing things you love | 
  
  2011 | 
  
   | 
  
  Open | 
  
  38[237] | 
 |
| 
  Aggregator | 
  
   | 
  
  15,000,000[238] | 
  
  Open | 
  
  5,310[239] | 
 |
| 
  Connecting indie music bands and listeners, through music sharing and
  social networking | 
  
  2003 | 
  
   | 
  
  Open | 
  
  14,220[240] | 
 |
| 
  Computer and video games | 
  
   | 
  
   | 
  
  Open to people 13 and older | 
  
  38,259[241] | 
 |
| 
  General, Music | 
  
   | 
  
   | 
  
  Open to people over 13 | 
  
  8,026[242] | 
 |
| 
  Micro-blogging, RSS, updates. Very popular in Taiwan | 
  
   | 
  
   | 
  
  Open | 
  
  1,991[243] | 
 |
| 
  A a business-oriented social networking site and a business directory | 
  
   | 
  
   | 
  
  Open to people 16 and older | 
  
  20,640[244] | 
 |
| 
  General, friendship, dating | 
  
  2007 | 
  
   | 
  
  Open to those over 16 | 
  
  82,914[245] | 
 |
| 
  General. In Simplified Chinese; caters for mainland China users | 
  
   | 
  
  480,000,000[246][247] | 
  
  Open to the general public | 
  
  NA[n
  3] | 
 |
| 
  Video games | 
  
   | 
  
   | 
  
  Open | 
  
  25,664[248] | 
 |
| 
  Knitting and crochet | 
  
   | 
  
  1,814,460[249] | 
  
  Open | 
  
  3,498[250] | 
 |
| 
  Significant site in China.
  Was known as 校内 (Xiaonei) until August 2009. | 
  
   | 
  
  160,000,000[251] | 
  
  Open | 
  
  95[252] | 
 |
| 
  Social network for scientific researchers | 
  
   | 
  
  1,000,000[253] | 
  
  Open | 
  
  8,732[254] | 
 |
| 
  Social network for musician and bands | 
  
   | 
  
  500,000[255] | 
  
  Open to people 16 and older | 
  
  1,806[256] | 
 |
| 
  Business | 
  
   | 
  
  500,000[257] | 
  
  Closed | 
  
  71,324[258] | 
 |
| 
  Science-oriented multimedia platform and network for scientists | 
  
   | 
  
   | 
  
  Open | 
  
  61,668[259] | 
 |
| 
  Music Community. Sharing and listening to music for free and legally | 
  
   | 
  
   | 
  
  Open | 
  
  612,429[260] | 
 |
| 
  Books | 
  
  October 11, 2006 | 
  
   | 
  
  Open | 
  
  18,152[261] | 
 |
| 
  Social microblogging site in Mainland China. | 
  
  August 14, 2009 | 
  
  300,000,000[262] | 
  
  Open | 
  
  28[263] | 
 |
| 
  Collaborative social network for Brazilian readers | 
  
  2009 | 
  
  420,000[264] | 
  
  Open | 
  
  28,449[265] | 
 |
| 
  Social Network in French-speaking world | 
  
   | 
  
  22,000,000[266] | 
  
  Open | 
  
  710[267] | 
 |
| 
  Social Network for Charity | 
  
   | 
  
  435,000[citation needed] | 
  
  Open | 
  
  101,364[268] | 
 |
| 
  General. Popular in Latin America and
  Spanish and Portuguese speaking regions. | 
  
   | 
  
  17,000,000[269][270] | 
  
  Open to people 13 and older | 
  
  2,676[271] | 
 |
| 
  Repository of original music pieces and networking. | 
  
   | 
  
  1,000,000[272] | 
  
  Open | 
  
  299[273] | 
 |
| 
  Live video streaming and chat. | 
  
   | 
  
  2,000,000[274] | 
  
  Open | 
  
  9,201[275] | 
 |
| 
  University students, mostly in the German-speaking countries. School
  students and those out of education sign up via its partner sites schülerVZ
  and meinVZ. | 
  
   | 
  
  17,000,000[276] | 
  
  Open | 
  
  7,080[277] | 
 |
| 
  A Social Network connecting students, teachers and institutions to course
  resources, study groups and learning spaces. | 
  
  December 2010 | 
  
   | 
  
  Open | 
  
  345,110[278] | 
 |
| 
  Stumble through websites that match users' selected interests | 
  
   | 
  
  10,600,000[279] | 
  
  Open | 
  
  146[280] | 
 |
| 
  General. | 
  
   | 
  
  100,000,000[281] | 
  
  Open | 
  
  288[282] | 
 |
| 
  Business networking | 
  
   | 
  
   | 
  
  Open | 
  
  136,346[283] | 
 |
| 
  Online artistic community | 
  
   | 
  
   | 
  
  Open | 
  
  281,501[284] | 
 |
| 
  General (primarily Argentina) | 
  
   | 
  
  11,000,000[285] | 
  
  Open to people 13 and older | 
  
  214[286] | 
 |
| 
  Education / Learning / Teaching - More than 400 subjects | 
  
   | 
  
   | 
  
  Open | 
  
  422,704[287] | 
 |
| 
  Learning / Languages / Translation - 1.2m terms in more than 1300 subjects | 
  
  May 2010 | 
  
   | 
  
  Open | 
  
  22,997[288] | 
 |
| 
  A Private Online Social Luxury Network with Exclusive Personalized
  Services | 
  
  December 2008 | 
  
  1,300[289] | 
  
  Invite-only | 
  
  1,244,109[290] | 
 |
| 
  Travel | 
  
  2005 | 
  
  1,588,000[291] | 
  
  Open to people 18 and older | 
  
  21,523[292] | 
 |
| 
  Travel | 
  
  2002 | 
  
  310,000[293] | 
  
  Open | 
  
  15,275[294] | 
 |
| 
  General | 
  
   | 
  
   | 
  
  Open | 
  
  8,081[295] | 
 |
| 
  French subsidiary of Classmates.com | 
  
   | 
  
  4,400,000[296] | 
  
   | 
  
  16,227[297] | 
 |
| 
  Spanish-based
  university and High School social network. | 
  
   | 
  
  12,000,000[298] | 
  
  Invite-only | 
  
  1,083[299] | 
 |
| 
  General. Micro-blogging, RSS, updates | 
  
  July 15, 2006 | 
  
  300,000,000[300] | 
  
  Open to all ages [301] | 
  
  8[302] | 
 |
| 
  Social Network for Russian-speaking world including former Soviet
  republics. | 
  
  September 2006 | 
  
  111,578,500[303] | 
  
  Open | 
  
  4,690[304] | 
 |
| 
  Gothic and industrial subculture | 
  
  1999 | 
  
  1,931,049[305] | 
  
  Open to users 13 and over | 
  
  21,052[306] | 
 |
| 
  Global Social Networking and Campus Networking available in English,
  French, German, Spanish, Italian and Portuguese | 
  
   | 
  
  35,000,000[307] | 
  
  Open | 
  
  435[308] | 
 |
| 
  Social network that focuses heavily on artists, including musicians and
  photographers | 
  
  2007 | 
  
   | 
  
  Open | 
  
  33,371[309] | 
 |
| 
  Blogging | 
  
   | 
  
   | 
  
  Open | 
  
  56,558[310] | 
 |
| 
  For computer fans that want to discover new software and games | 
  
   | 
  
  100,000[citation needed] | 
  
  Open | 
  
  33,350[311] | 
 |
| 
  For readers and authors to interact & e-book sharing | 
  
   | 
  
   | 
  
  Open | 
  
  7,036[312] | 
 |
| 
  Travel and lifestyle | 
  
  May 2003 | 
  
  10,000,000[313] | 
  
  Open to people 18 and older | 
  
  1,367[314] | 
 |
| 
  Teenagers - 10 to 17 | 
  
   | 
  
  30,000,000[315] | 
  
  Open to ages 13 and older. | 
  
  18,317[316] | 
 |
| 
  Community without borders, where sharing is everything. | 
  
   September 2011 | 
  
   | 
  
  Open to people 13 years and older | 
  
  370,755[317] | 
 |
| 
  General with emphasis on privacy and security | 
  
   | 
  
   | 
  
  Open, subscription-based | 
  
  3,359,241[318] | 
 |
| 
  Social polling network | 
  
   | 
  
   | 
  
  Open | 
  
  1,204,376[319] | 
 |
| 
  General | 
  
   | 
  
   | 
  
  General | 
  
  2,147[320] | 
 |
| 
  Books | 
  
  June 2007 | 
  
  4,000,000[citation needed] | 
  
  Open | 
  
  305,720[321] | 
 |
| 
  Online community space for the social justice and environmental movement[322] | 
  
   | 
  
  45,000[323] | 
  
  Open to people 16 and older | 
  
  239,901[324] | 
 |
| 
  Blogging and micro-blogging | 
  
   | 
  
   | 
  
  Open | 
  
  111,538[325] | 
 |
| 
  Site networking inmates, friends, family | 
  
  September 2000 | 
  
  66,000[326] | 
  
  Open to people 18 years and older | 
  
  228,915[327] | 
 |
| 
  Blogs and "metro" areas | 
  
   
Unknown 
 | 
  
  27,000,000[328] | 
  
  Open | 
  
  3,943[329] | 
 |
| 
  Business (primarily Europe (Germany,
  Austria, Switzerland)) | 
  
   | 
  
  11,100,000[330] | 
  
  Open | 
  
  270[331] | 
 |
| 
  Catholic social networking, created after World Youth Day 2008 | 
  
   | 
  
   | 
  
  Open | 
  
  712,292[332] | 
 |
| 
  Social networking for office colleagues | 
  
  2008 | 
  
   | 
  
  Must have company email | 
  
  3,622[333] | 
 |
| 
  Local Business Review and Talk | 
  
   | 
  
   | 
  
  Open | 
  
  186[334] | 
 |
| 
  Greek Web Meeting point | 
  
  2004 | 
  
  890,000[335] | 
  
  Open | 
  
  34,577[336] | 
 |
| 
  Online Community for Creative Talent (host of brand sponsored advertising
  contests) | 
  
   | 
  
  60,000[337] | 
  
  Open to people 14 and older[338] | 
  
  36,373[339] |