just picked this up via Om:
Through Ajax, the folks at meebo were able to create a virtual application-like experience within a single web browsing window. meebo integrates a user’s accounts from AIM, Yahoo Messenger, MSN Messenger, and ICQ into a single buddy list that is automatically populated upon signing into the meebo web site. Sort of like Trillian/Adium, but in a browser window.
We use Apache and Linux (CentOS) on the servers, and connect to the networks through Gaim
not only is my request possible, sounds like it's in the works :)