Feedback, Vouches, Rank are all irrelevant. If someone decides to scam, they'll do so. All rank does is generally increase the amount someone will scam for. EG, $250 Donor won't scam for less than $250, LS won't scam for less than $150 etc, Grey names can scam for anything as they're not invested at all. This has all got a bit off topic though, someone make a debate thread