Actually, I don't think that the presence of an Amazon representative on GOG's forums in such a thread is ... appropriate, for lack of a better word. It's as if one of my competitors would visit my shop to advertise his own, competing products there - I simply wouldn't expect such a thing, and would probably see it at least as a lack of courtesy on his part.
I'm sorry for this personal remark, but Psyringe, you seem to have no problem advertising Gamersgate (and Gamersgate only) deals here, with your affiliate link no less.
What's the difference between your behavior and an official rep from Amazon, who introduces himself as such? His is more transparent IMO.
Please don't take it personally, I just think it's a bit hypocritical from you. You (we all actually) are doing exactly the same thing that seems to bother you - we advertise deals from competition on GOG forums.