I have several suggestions for the Marketplace ads, given the high amount of scammy-type listings I've seen recently:
(1) The "new member warning" box should be moved to the top of the page on Marketplace listings so that a scammer can't attempt to bury it by typing a long list of pins for sale.
(2) There should be a "Report" link with each Marketplace ad, so that if several established Pinside members report it as suspicious, it will throw a red flag to the mods.
I've noticed a bunch of suspicious seller listings in the Marketplace within the last week.
There were several different "new member" usernames creating Marketplace listings using a sideways picture of a Cirqus Voltaire. When you clicked on their ad, it had a huge list of pins for sale, many of which were priced too good to be true.
It looks like it might be all the same guy from seeing the same listing price pattern over & over again. For instance, he always lists Wizard Of Oz "Ruby Red/Limited Edition" for thousands of dollars less than the "Regular/Standard Edition".