One IM to Rule Them All

Do you IM people using multiple services? The official Gmail blog announced that you can now Gmail chat with AIM users.

If you have friends on several IM services, try Pidgin instead. I'm able to integrate IM from AIM, Gmail, MSN and Yahoo Chat, plus many others that I don't use into one program.
http://www.pidgin.im/download/windows/

I used to use Trillian, which does a similar thing, but I couldn't make it to work with Gmail. Plus it turns out that I like Pidgin's UI better anyway.