The Facebook Connections Map
Here's a cool map based on over 210 million Facebook profiles (h/t: Jason Rentfrow). Compiled by Pete Warden, it plots the connections between places that share Facebook friends. The map divides the U.S. into seven distinct locational clusters with names like "Stayathomia," "Mormonia," and "Socalistan." More here.
Photo credit: Pete Warden