Thank you for the link , it's pretty useful .
However I can't seem to understand what those Arbitration companies do exactly ? and what if after the Arbitration the user Deny or refuse to re-pay what would happen ? Also all countries have those Arbitration stuff ?

Btcjam doesn't really protect you. The netarb (best case scenario) will just allow you to receive personal information of the borrower - such as home address and full name and phone number. I got scammed on btcjam a year and a half ago and the net arb didn't do shit :-/
Hmmm .. Im sorry to hear about your bad experience also thanks for letting me know .
I don't see what they expect us to do when we receive personal information of the borrower .. Should I call the Interpol if he is Alaska and I'am in Singapore ?
I will leave the thread open maybe some people will discuss their experiences with BTCJam . ty once again monbux