Pictures with user names don't always stop the scamming. Bought an AEG off Z-in with a fairly decent picture. What it didn't show (due to the angle) was that the outer barrel (and thus inner) was bent - significantly enough that I struggled to get the inner barrel out and it was useless - I couldn't even bend it back with a plumbers torch on it for 5 mins. It then took a few months or so, plus an official "court proceedings" letter to his parents home address before I got any contribution to the replacement outer barrel.
What might be worth doing (and I'm not sure what you see with less than 100 posts?), is having the classifieds section showing, but if you click on the link with less than 100 posts, it takes you to a message saying "you need 100" or something similar.