Foursquare is hot. The location-based social network has generated a lot of buzz in recent months and is adding thousands of users each day. Examples of businesses using this new platform have largely been limited to retail industry staples like coffee shops and restaurants . For retail businesses, location-based social networks such as Foursquare serve as a public loyalty program, providing business owners with valuable information about its customers while making it simple for customers to share their favorite places with their friends.