1 ) He posted like 5 or so 'stock' questions in several forums in rapid succession, all with the same advertisement attached. This made it pretty clear that he was either a 'bot' or a person here mainly for self promotion.
2 ) Twey gave him an infraction (about the advert) which he ignored and posted it again. Twey gave him another infraction. He obviously ignored both. I independently gave him a similar infraction. The points added up to more than 20 - instant ban.