I don't think that's why robak was banned. My theory is that the ban kicks in after the offending comment. This would explain the cases where it seems like some

I don't think that's why robak was banned. My theory is that the ban kicks in after the offending comment. This would explain the cases where it seems like someone was banned for an innocuous comment, but was actually banned for the comment before that. In robak's case, the ban came after a silly ramble about the economy. Presumably a moderator looked at his post history and saw it was only one of a string of silly rambles, and decided to ban.