1)facebook:facebook is the world's largest social network-visit http://facebook.com .
2)twitter:twitter is the world's largest social micro-blogging site visit http://twitter.com .
3)youtube:youtube is the worlds largest video sharing and watching platform,it is owned by tech giant GOOGLE. http://youtube.com .
4)eskimi: eskimi is one of the worlds largest dating network,and the largest in africa. http://eskimi.com .
5)mocospace:another dating like social network site. http://mocospace.com .
6)instagram:world largest Photo blogging platform owned by tech giant facebook.