Saw this while researching data visualization. This is very cool, especially since I just started using FourSquare.
“Weeplaces is an interesting application mapping an individual’s shared locations on Foursquare. Blue circles depict popular places, which grow depending on the number of visits, while yellow lines connect current and previous locations with the goal of charting one’s movement. A timeline on the bottom also provides additional information on the volume of check-ins over time. Anyone with a Foursquare account can simply login to Weeplaces and start mapping their trails.”