I had 406 AP after posting in the AG Official Photo Thread. There was a failed attempt at linking a url for the first post I left, so I expected to lose a post and the point you get for it (it's all in the explanation of the thread). Within less than a minute, I go to my profile and see that there's one less post and 16 points deducted. I couldn't have had points deducted for anything else because I write good comments on games and there were no other problems. Can someone explain what happened?