v. There is no rule against it, yet they can ban you? Then they should make it more known, and make it a rule. They shouldn't be able to be ban you for something that's not a rule.
There used to be, but I think it's been done away with now. Before, if you were younger than thirteen, your age would not show. But now it actually shows it if you are 12, not sure about others.
Nah, you don't have to thirteen to join this site. In fact, I have seen a member who was 10 who joined this site and nobody really cared. It's not like you can get banned for being under the age of thirteen.