12-24-2009 02:05 AM
UberTwitter via AppWorld works well. There are other Twitter apps for BB...it depends on what you want. Let us know more details and we'll try to help.
12-24-2009 05:57 AM
UberTwitter is very good, and is available at AppWorld.
Alternatively, there's TwitterBerry, and others too.
It depends how much functionality you need / want.