There's no grouping functionality that's actually appeared (yet) natively in Twitter, but for general Twitter use, I use Twitterific (on my MacBook), and Twhirl is a pretty decent client that runs on both Windows and Mac, though I'm unsure about Linux. Hope that helps!
I've heard about Twitter for some time, never felt I needed it. The other day my favorite radio station RealRadio.FM talked about it and I was interested.
After registering into the Twitter website I became disenchanted. I was hoping that I'd be able to create groups; family, friends, co-workers... just like an IM application.
I browsd the site some more and I found many 3rd party applications that I assume are what I'm looking for but, I haven't found any site that has reviewed this software.
Any suggestions?

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