I know all sorts of stuff about him...
Fuck, I know his full name, where he works, where his mom lives, I have saved info on his silkroad account and know that he (at least advertises) to sell marijuana. That is enough to seriously fuck him over - I haven't, but I don't know why he would fuck with that over like 7 bitcoins.
He also has sent me many messages to reassure me that he is going to pay me back. I don't understand why he didn't just take the money and run - and why he sent me a single bitcoin to continue to reassure me...
But he initially claimed he had the bitcoins on hand, which he admitted was a lie. He then sent messages about how he posted something on one of those auction sites that got hacked and lost a few BTC from it. That was quite a long time ago and I haven't received the rest yet, and now I see him trying to scam more people.
The only reason I made the trade is because WiseOldOwl, who seemed to be pretty regular and trusted on here, somewhat vouched for him.