Quite a surprise from Facebook but it’s letting outsiders tap into its chat service. AOL instant messenger is one of them. AIM uses Facebook Connect to integrate with Facebook IM, too.
To get started with that new feature all you have to do is log in to your AIM account whether you use windows or mac os, then you log into Facebook using Facebook connect. When you first load up the beta, you’ll see an option just above your contacts to connect with Facebook.
As soon as you do that all of your Facebook friends will appear in your AIM contact list. You can now chat with them just like you can with your AIM buddies.
Facebook Chat will now work with AIM and iChat instant messaging clients, handy no?
Chatterboxworldwide's Blog 