Foursquare is a location-based mobile network that was established in 2009 and has grown to over 6 million registered users, with 310 million check-ins in 2010. The service is centered around mobile apps for major platforms like iPhone, Android, Blackberry, and Windows Phone 7. Foursquare allows users to check into real world venues and earn rewards like badges, discounts, and recognition for their activities. By associating real life experiences with online actions, Foursquare drives behaviors in the real world through online engagement.