Foursquare for Blackberry has been updated again, and this time it’s only minor tweaks to the app, as it has become very usable, very quickly (I remember getting into the first beta around Christmas 2009, so the app has come a long way in only five months.

This time, the UI is slightly different, and the company has incorporated a new back-end check-in system to make it harder to cheat, and speed up location awareness.

Hit up Foursquare for more information.

Tweet