The one thing that skeeves me out about new people is seeing they have no posts on CAG, and yet they know all about our system here. But I don't think it's right to assume every new person is a scammer. Dumbasses like cinderella are easy to spot because they treat english as a second language and make claims like "i'll buy anything pm me" and they will almost always refuse to pay up front (and if they do, now you know their personal info - no getting a paypal acct without real bank information)
I've always said we shouldn't let newbies buy resells right off the bat, but that's just a policy I'm not in the authority to enforce. Phantoms hold significantly less risk, as hosts should be changing the pass once phantoms are created anyway.