What gets me is that Henry was stating what should have been obvious and received a sharp ad hominem attack as thanks. Now, either someone was wired to the gills on 'spresso, or else the plain facts hit bullseye on a deliberate attempt to sneak by the rule.
The organization and policies of HR are such that you don't have to dig through every forum to find what you're looking for. Things for sale are in the classifieds. Letting that slip would eventually lead to every forum being ad space.
Everybody screws up from time to time, but that one is just plain obvious. Best hope, IMO, is a return with, "Yeah, I shouldn't have tried that. Won't happen again."