I've heard a lot of bad things about online play.
Racist, loud, obnoxious 12 year olds who won't shut the hell up on the mic. Rampant team killers. "hax0rs".
I haven't had any problems thus far.. Until today...

Firstly, I finally downloaded all the maps I needed to play Halo 2 so off I went. I played 5 or 6 rounds without a hitch.
Then I join this one game and theres this high pitched, whiney voice who won't be quiet throughout the whole game. Every second word was a curse and he was just generally annoying.

Second, afterward I joined a game of Perfect Dark - infection, I like that mode. It's fun. But not when the majority of the players in the game are team killing a-holes. Seriously. There were perhaps me and three other guys actually playing correct. The other 17 or so odd players ran around randomly, shooting whoever - doesn't matter if you were on there team or not, if you were in there line of sight, bam! You're going down. I spent most of the match filing bloody complaints and player reviews with the hope I can avoid this in the future, but I've little hope for that.

S'pose the best I can do is keep my fingers crossed and hope some of the idiots mature a little.
Or find a group of levelheaded people to play with, but I'm not much of a people person... So i'll probably keep joining random matches and getting idiots as a result.. Le sigh.