Wanna try a mature community with a nifty server on a PHHat pipe? Stop on by www.ThePHHortress.com
Still, most folks I've met on the servers will be nice when you set the atmosphere yourself. I have keys bound to "Nice shot" and "Thank you" and ":-)" You can't imaging how doing something as little as acknowledging a good strike can improve the overall server morale.
So, ignore the flamers and lamers, and concentrate on the true sports!