The network effects, for sites such as Friendster and Myspace, are so great that an also-ran social network can keep a grip on an overseas community even if dies in the US. So it is that Friendster has become the default in Southeast Asian countries such as the Philippines, even though its audience has withered elsewhere; and Google's Orkut, which never took off in the US, has footholds in Brazil and India. Here are the territories in which the big social networks and blog publishing systems are particularly strong, mapped onto the board on which players of the global domination game, Risk, compete. I'm told hi5.com is popular in Latin America outside Brazil. I can't seem to discover which properties are strongest in Russia and sub-Saharan Africa; if you know, put the info in the comments.