I've just installed Meebo and from my first impression is really excellent, not only can you bundle up a fair few chat applications into one, there are other chat methods including website chat applications.

Supported Chat Applications on Meebo, if only they supported Skype as well.

I've inserted the chat application into the sidebar of this blog, so scroll down a bit and you'll find the chat application. Don't hesitate to say hi!

Meebo on mobile phones