Social Network - Web2.0 sites

clipped from web2list.com LinkedIn  3.8 (33) ITtoolbox  4.5 (4) Fanpop  4 (6) cyworld  4.2 (5) introNetworks  3.6 (5) MatchActivity  5 (2) Wikidot.com  4.3 (3) MarkBoo  3.5 (6) ziki  4.2 (13) secondlife  4.5 (2) Gaia Online  4.5 (2) CenterNetworks  4.5 (2) geni.com  4.5 (2) Karma Exchange  4.5 (2) hotornot  4.5 (2) Golfshake.com  4.5 (2) Spotplex.com :: What people read  4.5 (2) Fleck.com  3.8 (54) ListDump.com - Community Generat  4 (2) Wallop  3.7 (54)