I've upgraded Trillian to the new release. It's still free.
Trillian is a front end client which gathers up all the chat systems into a single front-end, so you can see who is online from MSN Chat, AIM, and Yahoo, as well as ICQ. The new interface, sounds, look and feel, are really good.
The other addition which is weird and a bit mindblowing, is that words you receive or type, are hyperlinked to a WiKi (community encyclopaedia) so that you can roll your mouse over the word for more info. How does it do that so efficiently and fast!! It's fun, and shows where all this Internet stuff is going.