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Italian writer, blogger and photographer Vincenzo Cosenza has for the second time put together a visualization that shows the most popular social networks around the world on a map, based on the most recent traffic data (December 2009) as measured by Alexa & Google Trends for Websites.

The first one, which we featured in June 2009, already painted a picture of Facebook taking over the world from the West, but the second one shows its relentless colonization even more clearly.

Facebook, with over 350 million users, is the undisputed leader of social networking in the English speaking parts of the world, and has been making strides in Latin-America, Europe and Africa as well. Based on Alexa data only, Facebook has even taken over Orkut in India, historically a high-flyer in those parts. Google’s social network remains the most trafficked in Brazil, however.

Facebook clone Vkontakte.ru has been able to resist and stop Facebook from becoming the leader in Russia. It’s worth noting that Vkontakte is largely owned by Digital Sky Technologies, which also owns a significant stake in Facebook, so you can see how they could potentially melt together in the future.

Hi5 has also seen Facebook take over most of the territories where it was leading, and has only been able to stop the social network from dominance in Peru, Portugal, Romania, Thailand and Mongolia. Meanwhile, QQ is still ahead of everyone else in China, where the number of Internet users is expected to double and reach a staggering 840 million by 2013.

Nowhere to be seen on the map: MySpace (which only leads on the Island of Guam).