But there is no easy way to determine that someone is a scammer. So, deciding to moderate scam may end up victimizing the innocent.
Aren't the scam accusation threads a better way to determine a scammer in the forum? If the accused doesn't come to clear his name in the forum, they could be considered guilty. But, something about this forum why I think the scammer is alerted through a negative trust feedback is because not everybody gets notified when their name is quoted in a thread. So, some members may not know about the scam accusation on them, and if they're seen guilty for not responding they may get banned, without proves if they're innocent or not. Plagiarism on the other hand, affects the neatness of the forum; encourages spamming. If plagiarism is not frowned at then members wouldn't spend time crafting out quality writeups on the forum. On the internet, I think Spam is worst than scam as moderators can detect spam themselves yet scam requires both parties to defend themselves. What do you think about a user that copy and paste posts in the forum and gets paid for doing that isn't it a bad practice?