Twitter announced the launch of its official app for BlackBerry yesterday. The free application is a simple way to tweet, retweet, and direct message friends and followers. A team at Twitter worked directly with RIM to create the app, so it takes advantage of BlackBerry's best functions and is completely integrated into your phone. The app works with your device's camera and photo gallery for easy photo sharing. And it also features inbox integration, so you can read Twitter messages from the same spot as your email messages.