I had a few things listed there for free so if it was a scam He / she never made anything from me, I would expect most listers also chose the free option too so I can't see anyone making much that way, would have been more profitable to spend the time setting up a real business, so, Maybe he was hacked and because he wasn't making much, decided it wasn't worth the effort getting back up and running.
Was quite a nice auction site, didn't seem as popular as
http://bitcoinclassifieds.net but might have grown with time.
Wish hm well and hope he tries again, Bitcoin needs entrepreneurs, maybe Bitcoin could provide advice for those setting up online shops etc.