Everything the Internet Knows About Me (Because I Asked It To)
This image is my New York. More precisely, it’s a heatmap of where I spent my time in 2010 as documented by my activity on Foursquare, a location-based social network. Perhaps you can guess where I live, where I work and which baseball team I prefer.
But I never intended to create this map. I just used Foursquare normally, checking in 1,491 times over the course of the year, and ended up with this wealth of data. Generating the map was easy, thanks to a tool by programmer Steven Lehrburger.