Ultimately this still boils down to holding a lottery on the forums without a vendor account. You are taking %10 commission for your time in providing a service. That is vending. You are not a vendor and even if you were, this sort of thing would not be allowed to take place on the forums. Also I can foresee the inevitable user stating that they never got their winnings. One of us would be forced to get involved and settle what is known on the market as a dispute. Sorry Nick. I know you put a lot of work into this, but even allowing for an exception in this case would set a precedent for others to follow suit. I will have to shut this down mate.