Pedro Martínez: That's absurd. A ban is a ban, and the banned person can only return after getting permission from the site administrator to do so. That's the rule in every web site I know. As far as I know, this hasn't happened.

New accounts from banned PEOPLE (known as sock-puppet accounts) are closed the moment they are discovered. Yes, it's true that administrators can't be expected to monitor every account, but once they're informed of a particular account they ban it as well.

The concept of banning an account but allowing the person to come back is something I have never heard of in so many years on the internet. Accounts don't violate site policy, people do.

That's like saying that if you commit a crime but change your name you can no longer get arrested because it was a different name that commited it