Foursquare, which debuted in 2009, quickly popularized the idea of “checking in” by way of an app that would tell your friends and followers if you were at a certain store, restaurant, or theater.
The idea has since been adapted by both Facebook (with their “Places” feature) and Google (with “Latitude”). But now Foursquare is bringing in a partner to introduce a whole new level of “checking in.”
