cleverjake: You're being censored. All your comments are dead on arrival.
I never knew what any of the setting were.
Well, what do you know. Those are documented in the FAQ. You'd think that the explanations would be near where you use them!
I believe the idea is that it's for people who are legit trolls. If you let them know, they'll just create another account. But if they think people have just grown tired of their antics, they're more likely to move on to another site.