Well I know where NOT to shop if they feel that 10% discount is not worthy of free advertising. Oh well. I hope they can can reconsider there decision.
I believe that the more places they advertise the more sales they will do. I do know that I am the type of person who would call them from an add online (FROM THIS SITE) and purchase items, unaware of any discount. These un-accounted sales from forums happen all the time. Advertising is not always traced from a specific source.