I love how it looks like on my blackberry curve and how it functions when I need it. It is on it's 7th beta release and it works like a charm. When I receive updates from TWITTER it refreshes on the time indicated on the installation. I love how you can customize the interface and how you view tweets consecutively. There is also a separate line when viewing tweets when you are mentioned and a tab for direct messages too.
It was perfect because each picture that I took on my bb had a direct upload option whenever I tweet. If I follow someone it automatically adds them on my directory making it easy to mention someone's alias anytime anywhere. I love ubertwitter and if you have friends who just bought one please recommend to them this free application. I'm sure they will love it too!