It speaks well of the kind disposition of the Administrators of this message board and the friendly nature of the GN2 community at large when more words are wasted on a reply to someone who is taking advantage of this board, than were spent in the lazy original post itself.
But other than that, I don't see the point. If a user of this message board wants to link to their for-profit site, it seems like they should also be contributing to the efforts on this board. And when they contribute absolutely nothing in the way of information of their product in their post on this board or at least create a proper start for conversation, It doesn't seem as if they have even come close to earning the right to advertize and clutter the board in multiple subforums.
If it were me, I'd just move the first thread (without trace from it's original location) to the hock shop and delete any subsequent threads entirely. But it's not me, so of course you should do whatever you see fit.