Are you talking about playing Xbox online or just in general? I play Xbox Live quite a bit and hang with a group called AGE. We play Live games together a lot along with some PC gaming etc. Xbox.com forums are usually full of flamers and people who tend to be just plain assholes as far as I can tell (I finally stopped going there.)
There are plenty of user forums out there to join up with. Here is a list of the ones I know:
www.mxgamers.net
www.xblgames.net
and the one I belong to -
www.adultgamingenthusiasts.com