"Closing this before it turns into a floodgate of complaints. Please forgive.
We (the staff) don't ever disclose specifics about individual bans, but it's almost always the same situation: a person repeatedly breaks one or more of the forum rules and continues to do so despite..."
Ah, it's possible they're just unconfirmed account or something but more often than not they have a visitor messages page but no option to leave a message, increasing the odds of them being banned. Anyway, that's all a fair enough response if there are dozens of rules people can be breaking.