A brief break from the ongoing discussion to point out Adium X, which is an open source IM tool for Mac OS X.
The cool thing about it is that if you happen to have the OS X Equation Service installed, you can IM latex-style equations, and they are automatically converted to equations on the fly. There’s a post about it at Cosmic Variance.
It looks like a great tool for long-distance collaborative scientific correspondence.
[tags]IM, equations[/tags]
