There are very few games that I play now without a blanket mute on all mics, If I am playing with friends I'll leave it on or un-mute them and only them. It's not just the racism it's just the general attitude of online gamers, it's worst on Xbox live but the PS3 is almost up there giving them a good run for their money. That being said the PC isn't spotless, it took me like 8 months to find a Team Fortress 2 server that didn't require me to block more than 3 people. Most gamers now just don't care, I'm not too old (only 20) but I mean when I started playing games online it seemed better it seemed less.... ummmm...... moronic for lack of a better word. The state of online gaming anywhere just pisses me off, I'm not going to say I'm innocent of trash talking almost everyone is, but there's an acceptable limit for fuck sakes. Laugh at somebody for doing something stupid and dying, or for walking off a cliff whether or not it's an accident it's hilarious.
As for the racism, it's not necessary anywhere but I agree with all of you that say it's just something that 12 to 14 year olds think is absolutely hilarious (I don't know why. I never did). I really that they think it's just a way for them to show off online, a way to grow their e-penis, speaking of which I wonder what would happen if you refused them any form of vocal or textual interaction with their fellow players.
While I'm wall-o-texting this I hate mic spammers also. There is nothing worse than some 14 year old kid who thinks it's the most awesome thing ever to make you his captive audience playing shitty music. Hell in one case on TF2 there was a guy who would constantly sing over the mic he would just hold the button and sing, he went for like 15 minutes (I blocked him fairly quickly, but others did not.)
Sorry for the wall-o-text, this is something that has been bothering me for a little while now. And I apologize in advance for any grammatical or spelling answers (not the intentional ones, I'm Canadian I don't care what the spell checker says there is a u in colour.) I'm fairly tired and just got off of work. I'll fix them eventually.