The system is meaningless, too many little kids vote you down because they hate you. I got voted down for trash talk, but I never trash talk since I feel trash talk is so stupid in a game.
You need a 360 specific one. Once you get on there, try and get a few friends that you like and do some party chat. You'll learn that you'll hate much of the common players on Xbox live since they get on to screw with others to piss them off. Try and do game chat on games that almost require teamwork though, otherwise, I think you'll enjoy party chat more than game chat.
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