1. by Murat Can Demir http ://www.muratcandemir.com .com Introduction to
2. ? ? ? ? ? ? ? Foursquare is a mobile social networking tool/game founded in March 2009. It is an app that uses the GPS in a mobile device to help users identify their Foursquare “friends” where they are. What is 4sq?
3. Over 3 million registered users! Foursquare has over 3 million active users with an average daily growth of 19,000 daily users in the month July. With a growth of 350% from January to August 2010.