PaulK's terminal letters

Yes! Thank the Great Green Arkleseizure that I'm not the only one who has noticed this! I've wanted to ask on many, many occasions, but always resisted... if they were just simple typos I didn't want to seem rude. Though if they are then why do they always appear at the end like that? Why not more randomly?My (insane?) hypothesis is that Paul was born with six fingers on one hand, and the muscular tissue of the extra digit is connected in such a way that it causes a spasmodic reflex every time his "regular" fingers stop typing. That's why the random characters tend to appear at the ends of his posts. That's my story and I'm sticking to it.But, seriously, now that I know I'm not the only one who's curious I don't mind asking so much. So what's the deal, Paul?

My other idea was that he was trying to gradually corrupt our minds by inserting subliminal messages, one letter at a time, into his posts. *feels a sudden urge to sacrifice live chickens to the Almighty Paul*