http://www.quakelive.com

For those of you that are not aware of QuakeLive, it is a web launched Quake game that is actually pretty dang cool. Oh and it is free. It has the same games as Quake 3 does. Instagib, Free for All, Capture the Flag..........and Team Arena. Find out what the handle your friends are using and you will be able to set up a friends list to know if they are online playing and what server they are playing on.