Honestly, I've asked similar question too. Why is scam left unmoderated and in cases where the scam is clearly proved to have taken place, nothing is still done. For me, both should be weighed on the same scale. Forum admins should revisit that rule and activate a ban clause on scam because scam does as much scare as plagiarism to this forum. I don't subscribe to the notion that users should be wise enough to spot a scam. Not everyone will be as wise as those who already knew how. After all, commonsense isn't common.