Looks like he has scammed at least one other person in the past...
![Undecided](https://bitcointalk.org/Smileys/default/undecided.gif)
I've left him negative feedback, so hopefully no one else trades with him.
Congrats, you've left negative feedback on a scammer for once, instead of leaving negative feedback on people you suspect to be scammers based on
very circumstantial evidence with around a ~50% false positive rate.