Emerging Technologies in STC

I’ve been fiddling with Twitterific, a Twitter aggregator, this afternoon. It's proved surprisingly useful: I don't have to remember to check twitter.com, since all of your tweets automagically appear on a little widget on my desktop and I can also enter tweets there. The end result looks like this:

You can see the grey Twitterific bar over on the left-hand side. It makes Twitter much more useful and real-time. (For instance, Amber and I just had a very briefly worded conversation via Twitter and email.) There are a couple of other, similar programs available if you're interested in fiddling with this sort of thing. Here are links to all of them that I'm currently aware of:
Twitterific (for Macs)
Snitter (for both macs and PCs)
Twhirl (for both as well)

Btw, this is the first entry in our "awesome apps" category. Feel free to post to this category yourselves, since I'm sure you're all also aware of cool apps that make your lives a little easier (or more interesting).

UPDATE 1/31: I twittered this yesterday, but I’ll say it here too: Twitterific’s ads are so annoying that I dumped it for Twhirl. One of the things that really irritated me was that there was no obvious freemium option — that is, no option to upgrade to a paid, ad-free version. I’m fine with paying for things, but not with being forced to accept advertising.