Turn Your Foursquare History Into A History Lesson With Fourstalgia (2012) October 11, 2012 by billhartnettOne of my favorite new apps that use the Foursquare API is Fourstalgia. It’s a very cool hack project built by Jon Hoffman @hoffrocket, an … Read moreTurn Your Foursquare History Into A History Lesson With Fourstalgia (2012)