Foursquare is one of those apps/social networks that you either totally get or you have no idea what is cool about it. Foursquare's simple purpose is to let you accumulate "check-ins" for points and potential mayorships of establishments. Competing with your friends and now, thanks to BBM 6 integration, sharing of your achievements on your Twitter feed or BBM status is also part of the fun.
Today, Foursquare for BlackBerry has received a minor upgrade from 3.1 to 3.1.5. This new build includes minor bug fixes and even some cool little UI tweeks. Check out the App World link below for more information.