Twitter Apps

• TwitterBerry - This was the first Twitter BlackBerry app that I installed and I've been using it ever since. It's got a great user interface and is really easy to use, but the one thing that I wish it had was retweeting capability and more search functionality. I haven't updated my version for a while, so for all I know they might have added some of this functionality in.  

• Tiny Twitter - I eventually installed Tiny Twitter after hearing some friends talk about how awesome it was. I have used it ever since and even though I don't like it's overall user interface as much as TwitterBerrys, Tiny Twitter has some killer bells and whistles (like search, retweet, trending, etc.) that makes it definitely worth having on your BlackBerry.