I've been very fortunate, I have never been burned here and only once although very slightly on Gunbroker.
Since there is no rating system in place here, I keep a small notebook that tracks all of my transactions here. It includes the other guy's username, if they were the buyer or seller and a plus or minus mark which serves to rate the transaction. As I stated above, it's full of plus (+) marks.
I will say this, there are a few guys on here that I've done business with in the past that I would ship to prior to receiving payment. You can get a pretty good feel for a guy buy following his posts.
