Naah, UT had it's own server system. Shitspy was just one of the additional methods that worked with it.

There's still a stack of UT99 servers running, and it's still pretty busy. IMO 2k4 was the better game, but 99 is still great, runs on toasters and incredibly is cheap on Steam... Plus it's better than shitty modern FPS' ¬_¬