Exactly my point.
These people that ask to buy a parking account (Parked, Sedo, namedrive etc) do that so that they don't have to go through the approval process first.
Your stored info with the PPC company ensures that they can then act anonymously, dumping fake traffic onto domains and retrieving payments - before they get banned. Then they hop onto another account. Meanwhile, you get banned because you sold your account; it's against the TOS of the parking companies.
So yes, it's a scam. There are also recruits that work for a larger scammer. It's been proliferating on various domain forums for a while now.