Simple. I blacklist them and move on (though I do consider anyone an idiot that uses stupid names in the first place and it is my right of association to NOT associate with such persons). It's none of my concern if anyone is breaking the rules unless they're actually doing something to realistically put them ahead of me or coercing someone. Just like in the real world, I couldn't care less if you're breaking the law unless you're using coercion~because the chances are always going to be that the law shouldn't exist to begin with.