Twitter Top 100 Users
This Google Map of the Top 100 Twitter users (based on the number of followers) reveals that only 7 of them live outside of the Americas. Those 7, who are all based in Europe, even include Brazilian footballer Kaka and U.S. tennis player Serena Williams.
The markers on the map are colour-coded by category, for example, music, entertainment, technology etc. Like BatchGeo's Map of Top 100 Websites Worldwide the map features a really cool marker clustering system. Not only does each clustered marker show the number of markers at the location it features a nice pie chart that represents the percentage of each website category at the location.