Where Do You Go is an interesting mashup that shows the areas you most frequent in a city, using a heat map layed on top of Google Maps. The data is derived from your Foursquare checkins.
The above image represents the areas of San Francisco I most frequent, based on nearly 400 checkins with Foursquare over the last year. Red / white are areas visited the most, while blue / green (and grey) are areas I visit the least or not at all.
This is a pretty fantastic use of one’s geo-location data and it’s something I’ve always been curious about. Just where exactly do I go all the time, and what areas do I frequent. This sort of thing might help plan further adventures to parts of the city that I neglect. I just might have to reinstall Foursquare on my iPhone after all!
Of course, when I do finally reinstall Foursquare, what happens?