The CommonCensus Map Project is redrawing the map of the United States based on your voting, to show how the country is organized culturally, as opposed to traditional political boundaries. It shows how the country is divided into 'spheres of influence' between different cities at the national, regional, and local levels. View the full-size map here.
The CommonCensus Sports Map Project shows the team affiliations of sports fans. View the map of NFL team affiliations here. (The map shows some surprising data from Mississippi and Alabama.)