[dang]

At this point it seems clear that you don't want to use HN as intended, so I've banned this account. If I've guessed wrong (moderation is guesswork, and we do guess wrong), you're welcome to email [e-mail] and give us reason to believe that you'll use the site as intended from now on.

Edit: you added your last paragraph after I posted that. Actually, we frequently unban people and are happy to, as long as we believe they'll follow the guidelines in the future. We don't ban people for asking questions—we spend countless hours answering them. What doesn't make sense is to play the infinite concern-troll game, which can easily suck all our resources away from the rest of the site. Since we've had these exchanges before with no effect and you've continued to break the site guidelines, I made that call. I believe that the bulk of the community understands why we have to do this, even if it means guessing wrong sometimes, and supports it as long as we're willing to correct mistakes.