yeah that happens, but i traded with grimmi too, not big deal but succesful. Through i have also bad experience with him when he was unable to finish some MFC trade.
Just one guy scammed me, who i know was shever.
This is how it happened.
I had have to trade with Dark Angel some gatlings, but before contacted him via forums to finish trade i met "Ruda Suka" nick in Den, i asked him if hes ready for trade and arranged to trade in VC. He camed with "bananowy" asked me to come closer to car , i camed and he bursted me with another alt with nick ".attaris", he grabbed money and escaped in car.
After this happened i have investigated who it might be, and i figured out .attaris is Gatlink tank one of shevers alts, member of TBW. I have discused this with jacky who was his leader in The Black Widows, also Kelin helped me a lot to get all necessary informations. Jacky ensured me that shever was punished and kicked out of TBW.
Also few people told me that grimmi is forum account of shever, but jacky told me its not him, still not sure about.
NOTE: Somebody with fake accounts "bananowy" , "Ruda Suka" and his fighting alt .attaris managed to scam me, if you know any additional information, please PM me.