50 Online Social Worlds in under 7 minutes

I saw this a while ago, thought it was cool and that I should blog it just so I know where it is if I need it for a class or something. So here it is: Over 50 virtual worlds featured including:
Second Life, HiPiHi, Kaneva, Twinity, ActiveWorlds, LagunaBeach vMTV. There.com, Habbo, Google Lively, FootballSuperstars, Weblin, AmazingWorlds, CyWorld, Whyville, Gaia Online, RocketOn, Club Penguin, YoVille, Webkinz, BarbieGirls, Prototerra, IMVU, Spore, vSide, Tale in the Desert, SpineWorld, Stardoll, The Manor, There.com, ExitReality, Vastpark, Qwaq, PS3Home, GoSupermodel, Grockit, Croquet, Metaplace, Coke Studios, Dreamville, Dubit, Mokitown, Moove, Muse, The Palace, Playdo, Sora City, Voodoo Chat, TowerChat, Traveler, Virtual Ibiza