Orkut

The number of Brazilians has far surpassed any other demographic on Orkut (despite the recent bugginess and laggy-ness). It's fascinating. Here are the stats of the top 5 countries as of today (according to Orkut):

Brazil: 35.33%
United States: 27.05%
Iran: 5.41%
India: 4.02%
Estonia: 3.17%

Fascinating, isn't it? And quite surprising. There's also basically a Portuguese version of every community within Orkut. Of course the ones I follow most are fanfic/craft related, so there's Harry Potter Brasil, Harry Potter Senior (for Portuguese-speakers over 18), Harry Potter - Porto Alegre, Harry Potter Brasil - Fanfix, Fan Fictions, RPG Brasil, Fotografia Digital Brasil, Plastico Bolha, etc. etc. etc.