<p>Foursquare is an application that lets users save and share information about the places they visit. The app also provides personalized recommendations and deals based on user preferences and tastes. The Foursquare API provides developers access to all Foursquare mobile applications data which can be integrated into websites, mobile and other third-party applications. This post features a few innovative, entertaining and useful mashups that use the Foursquare API.Fourpocalypse Now</p><p>Using the Foursquare API and Google Maps API, this app helps users find "foursquare apocalypses" happening at locations specified by the user. The Fourpocalypse Now site defines foursquare apocalypses as "the idea of a something-pocalypse, that is, a catastrophically popular event local to a particular area that thousands of people check-in to."</p><p>ProgrammableWeb is based in Seattle, Washington.Geosay Super Local Information</p><p>Geosay uses the APIs of Foursquare, Twitter, Google Maps, Wikipedia and MaxMind GeoIP. Users of the Geosay app can find out what others are saying on social media platforms based on specific locations. The results are listed in order by distance, so the results from the closest distances are listed first.</p><p><a href="http://blog.programmableweb.com/2012/12/06/innovative-entertaining-and-useful-mashups-that-use-the-foursquare-api/">Keep reading...</a></p>