WeePlaces.com built and released a visualization of FourSquare activity this weekend, and it has already gotten quite a bit of use from those addicted to the new world of geolocation.
Now, all my silly check-ins at 7-Eleven, church, client offices and more, show me racing up and down the Peninsula, with the occasional jaunt into the East Bay (see the embedded video above). If you're a Foursquare user, and you want to relive your own life, start at http://weeplaces.com/foursquare and run your own visual.