Yes! By default, Fedora comes with a simple instant messaging program called
Empathy, which supports MSN Messenger,
ICQ,
AIM, Yahoo!
Messenger, and Google Talk,
and many other protocols, all at the same time.
To start Empathy, click on the Applications menu, go to
"Internet," and choose "Empathy IM Client."
If you don't like Empathy, you can use Pidgin, another Instant Messenger
program for Linux. To install Pidgin:
Pidgin will then be available in the Applications menu, under
"Internet", as "Pidgin Instant Messenger".