Here's an interesting little slide show showing Linux in places that you might not expect. Keep your tongue firmly in your cheek for the opening slide. It's a joke. Past that the samples of Real-World Linux are pretty interesting.
I've become a fan of <a href="http://www.pidgin.im/">Pidgin</a> as a chat utility. I keep multiple accounts on multiple services all working together. It runs on Linux, Windows, Mac, etc. I just found a plugin that hooks into the chat for Facebook. It brings up my Facebook friends with the others. Pretty handy!<br /><br /> I use the <a href="http://www.pidgin.im/">Pidgin</a> client for a lot of my instant message needs. It's free, multi-platform and I find it very useful. It just became even more useful for me with a plugin that hooks to the facebook chat protocol. Neato!<br />