There is another option, but it will cost YOU THE USER.

There's a system in place on my other site Ownedcore.com where traders can verify their identity. You would have to pay XX # of points do this feature, but do it once and you are good to go.

Scammers probably wouldn't go through the hassle... +if you agree to do it, both you and the person you are trading with will have access to the information (name, phone #).