bp, usually "secret promotions" are "targeted promotions". They are meant to be visible to the targeted niche but "secret" for others. Most businesses will offer incentives only to explicit recipients of offers and it is only in some businesses that offers are extended to others not on the target list that "quote" the original offer.

As a semi-marketing type I have no problem with "secret" promotions As an FTer I do prefer that knowledge of the secrets let me into the hallowed chambers!