9. Historyof social network Early social networking sites started as generalized sites. The first online social network site was started in 1997, called sixdegrees.com
27. Names of sites having more than 100 million active user accounts: Name Active user accountsDate Facebook 600+ million January 2011 Netease 360 million May 2011 WindowsLiveMessenger 330+ million June 2009 Habbo 203 million February 2011 Twitter 200 million January 2011 Gmail 193.3 million November 2010 Skype 145 million March 2010 Sina Weibo 140+ million May 2011 Vkontakte 135+ million February 2011 Orkut 120+ million August 2010 Bebo 117 million July 2010 LinkedIn 100+ million March 2011