Has anyone been playing Quake Live?

http://www.quakelive.com/

I started playing a few months ago and I gotta say, it's really addictive. It is pretty much a free browser based version of Quake 3 Arena(which is a really good thing). Also, there are now versions for Mac and Linux as well. I can easily say that is is the best free game I have ever played.

I do every once in a while

It's pretty great. I kinda got tired of Quake 3 after playing it for so long when it came out, though, so I just don't play Quake Live that much.