Map of Social Networking 2008 vs 2009

This map was from a post in 2008 - it showed what social networking sites dominated which countries at the time:

A year later, someone has compiled the data again, and Facebook looks well-positioned to be the dominant network in a majority of countries.

I wonder what this map will look like in 2010.  Will there be a single network to monopolize the world's social graph?  I didn't think this was possible a year ago, but now I'm not so sure...