I personally notice that most other gamers are fine, regardless of where they are from... except Halo 3 and Gears of War.
Why is it that everyone American on there has to sound like a gangster, reffering to themselves and everyone else with the old *n word* and calling everyone else gay, often before the game has even begun and just on the game setup screen. The same also goes for most of the white kids, who are also trying to be gangsters. Then the rest tend to be very young kids who like doing things such as making weird noises into the headset, singing or playing music down it.