Anne Zelenka at Web Worker Daily has a very concise summary of the functions and features of GTALK and explains how to get more out of it.
While I use Google Talk alot, I tend to diminish its value on the Mac because of the lack of a voice client there, and instead tend to use it more when I’m on the Flybook, my Windows Vista portable of choice, or on the new Nokia N810 Internet Tablet where it really shines.
Give Anne’s recap a read and see how it gets you using more of Google’s very complete IM platform agent.