Okay, I'm pretty sure this is the second or third suggestion thread, but still. There's absolutely no good reason not to have this in place. Even adding a warning in-chat which shows to the user typing it would cut bans significantly. Something like "Use of racial slurs result in bans" or something like that, since these guys getting reported usually have no idea that it's a bannable offence. Regarding people saying "you can just replace an i with 1 or e with 3" how about filtering that TOO? I'm gonna back Ruelel's suggestion of "silly willy" but open to suggestions.