There is a lot going on in the b2evolution world at the moment what with the release of b2evo 3.2.0-beta "Woodland Hills" & b2evo 2.4.7-stable "Tilman". You should definitely check these releases out and consider upgrading when 3.2.0 comes out of beta as it looks like a pretty cool update.
One of the really cool things about b2evo version 3.2.0 is that the Twitterlution plugin is now included by default. This means that b2evo users get Twitter integration right out of the box. When the plugin was included a few updates were made to improve the plugin along with integrating it with some of the new 3.2.0 features like per blog settings. Unfortunately due to using these new features the plugin is no longer compatible with the 2.4.x versions of b2evo. I have therefore take the improvements and included them in a 2.4.x compatible version of the plugin for those who can't or don't want to upgrade their blogs to the latest version of b2evo.
For those of you using a 2.4.x version of b2evo go get the plugin from the Twitterlution plugin page and for those using the latest 3.2.0 use the plugin that is included by default.