I am a member of another forum (unrelated to firearms), that has a post minimum set, and yes, there are the occassional padders that post crap to boost their count. Usually, once the mods there inform of the forum rules, the seller becomes a regular poster with mostly contributive commentary or genuine knowledge seeking. It is all in the way they are handled.
I have had a transaction with one member here, and I must say that it was a very pleasant transaction. I don't remember who it was, and I am way too lazy to check right now, but he is definately on my return favor list. If your reading this you know who you are (Browning Hi-Power grips).
Just remember, if your gut tells you something is amiss, it probably is. Stay away and you are likely to have one less headache.