Apps
Brightkite
Website | iPhone App | Android App
Foodspotting
Website | iPhone App | (with Foursquare checkins)
Foursquare
Website | iPhone App | Android App | Blackberry App
Gowalla
Website | iPhone App | Mobile
Loopt
Website | iPhone App | Android App | Blackberry
MyTown
Website | iPhone App
Yelp
Website | iPhone App | Android App | Blackberry | Palm Pre | Mobile
