This document discusses the location-based social networking service Foursquare. It provides an overview of Foursquare, including its growth and popularity with over 10 million users. The author then discusses his own experience and credentials using Foursquare, as well as reasons why businesses should utilize Foursquare to engage customers, encourage loyalty, and gain analytics insights. The document also covers upcoming Foursquare features and enhancements, examples of businesses successfully using Foursquare promotions, and resources for learning more.