I have to agree with GTS-R 001 as I can not find anything in the rules about posting in one or more forums. As a paying sponsor we have the right to do so as far as I can see in the link below.
http://www4.forum.viperclub.org/showflat.php?Cat=0&Number=246224&an=0&page=0#Post246224
Actually....if I am not mistaken, there are separate "guidelines" that go out to sponsors concerning their actions. You are FREE to post as many times as you like, RacerRobbie, but you will never get MY MONEY for ANYTHING if you do. There should be a certain degree of common SENSE and DECENCY surrounding ANY site sponsor plying their wares.
Suffice to say that, if I recall correctly, site sponsors are limited to a certain number of "Buy my stuff" notices OUTSIDE the approved section every month. If I had to come up with a number it is ONE!
There is a separate section for site sponsor/vendors to ply their wares...that is where all of this crap belongs (save for the ONE instance allowed...or whatever the number actually is).
As a "paying Sponsor" you might THINK you have the right to do whatever you want....but you would be wrong. Not only woould you be wrong....you'd be seen as an annoying "site sponsor" and people would avoid you like the plague.