I added AIM and MSN transports to the Jabber server (jabber.nervestaple.com). Sadly, most of the popular Jabber clients don’t support setting up Jabber services. I used Psi to login and set them up.

http://psi.affinix.com/

I also found a web-client you can use to do the same thing.

http://jwchat.org/

I’ll be testing it out, both of these seem to be decently mature project.