Upload & Sell: Off
It's a tough situation. I was a previous member and when the site updated quite a while back, it was a time when I just wasn't using it that much. Had to sign up for a new account. But even if that hadn't been the case and I was just new to the site . . .
I think the best things that members can do for the all of a sudden new B&S posters is to post a reply directly on their ads . . . suggesting that as a brand new member, it would be prudent for them and safer for potential buyers that additional seller information should be included.
First and foremost in my mind is listing their specific city versus just a State or country!
I think what makes this site great, and respectable, is both Fred and the members watching out for each other.
At the same time, having been through it, as a new member, even a new B&S member I would not like the idea that I need to have a long waiting period. But if it keeps scammers away, then I guess it is probably the best for all involved. Some sort of method to certify who you are would be nice, even if it meant incurring a fee.
But safety has to be the first priority, and members need to participate in assuring this, like the OP is trying to do.