I don't support this, because the $5 donation may be a small price to pay for to somebody who is going to scam hundreds of bucks...
But I do agree, we need some way how to dissuade scammers from coming here. I can't think of anything off the top of my head, but SOMETHING has to be done. I got scammed on my first trade here, and I see scam reports coming in by the dozens every week. It's getting pretty bad.
Maybe people can apply for "Premium" status once they have a certain amount of vouches, and the admins would have to approve?