I used to play it a lot, especially when it was just a mod for UT2004, but not that many people play it and there are limited servers now so I havent played in awhile
I played it back in 2006 or whenever it came out. I found the maps to be too big and I'd spend forever walking/driving somewhere even when the server was decently full.
I'm downloading it again to try it out (after all, i should try it again to get my moneys worth).