If you haven’t heard of foursquare by now you should have! Foursquare is a location-based social networking site. I have actually been using location-based social networking sites for a while now. I first started with Brightkite, which was a service where I could check in places and share my location with people. Foursquare is much the same thing except they have added a sort of game aspect to it by giving you points for checking in places and awarding badges for doing certain things.