Honestly we'd rather remove the newbie restrictions, rather than make them tighter just to solve a problem that can't be solved. No matter what we do to make an account hard to get to the lending section, they'll just do it a dozen accounts at a time. Just look at the guy I was responding to. He sent 500 dollars to someone with 13 posts and a month on his account. What kind of restrictions can we place that wouldn't burden normal users too badly, yet cause someone to not want to make that kind of easy money?
In the immortal words of Ron White: you can't fix stupid. You're absolutely right: some people are just going to make terrible decisions like that, and we can't help them.
But we can make it more difficult for that scammer to claim another victim, and we can make it so members have less excuses when falling for obvious scams. I think both of these things can be done without a heavy burden on the community.
I think the simplest idea (which is also in
my topic) would be putting a post requirement to access the lending subforum, which is where most of our scams originate. Putting a 150 post count requirement would increase the amount of time needed for a scammer to place his trap in that section. It would also give both scammers and legitimate members a larger pool of posts for potentials lenders to review before committing to a deal. If the scammer simply fills up his count with off-topic or short, pointless messages, a smart lender will think twice before parting with his money. Members who give their money away without doing their own research will have less of an excuse when they cry foul: 13 posts are hard to judge, but 150 will give you a good idea. Since the restriction would only affect that subforum, it would place no burden on newly registered members.
Hand-in-hand with that idea, or alternatively to it, would be placing a time restriction on the lending forum: accounts that are not older than, say, three months are not allowed to post there.
Both of those ideas would increase the time it would take a scammer to place a topic and get a victim. If he has to go through that wait for every account he creates, the "reward" he gets may not be worth the time he could have spent elsewhere. The scammer could always increase his target amount, but high-dollar scams are less likely to claim victims (especially if, with the posting requirement, the scammer has mostly useless posts).
Like you said: that scam is easy money. Quick changes like those can make it hard money. Scammers usually don't want hard money.
My topic also mentions possible changes to the newbie requirements that could help, but the balance would need to be in making reasonable restrictions that help prevent scams without burdening the community.
EDIT: Another good thing, I think, about these changes is how simple it would be to implement them. I've never been the admin of a forum, but I would think it'd be something like changing a setting on the forum control panel. It would, at the least, result in less work for theymos and the mods to take care of.