Learn how Chicago Tourism is using Foursquare to increase exploration in the windy city.

Foursquare or Gowalla? Now you don’t have to choose! Check into venues on both, simultaneously, with Check.in.

Take the mystery out of winning the coveted “Mayor” title for a certain location by discovering how many visits will take the crown.

This app ties in with your foursquare contacts and uses geolocation to ensure that you DON'T run into the jerks, dufuses and schemers in your life.

Use this free tool to learn how Foursquare users are interacting with your venue, or others.

Visualize your personal map based on your Foursquare checkin history.

Feeling light on cash? Utilize this Foursquare based service to locate all of the available freebies near you. Currently available in 14 US cities, with many more to come.