It's not advertisement. There are literally thousands (if not millions) of people who think that they know what they are doing, but yet they don't understand this concept.
I see new threads come through here almost every week by people wondering if it's ok to use like a 9800 GT as PhysX for their GTX 480 or GTX 570/580, etc.
That's what I hate so damn much about OCN. The flood of the same old question that gets asked over and over again because no one knows how to use the search function.
Only if the rules of OCN changed and made it like some other forums. If you don't search or ask a question that's been beat to death. Then close & lock the thread and tell them to search. Make life a little bit easier.