How does this market differ from other markets?

Unlike the trading of stocks, futures or options, currency trading does not take place on a regulated exchange. It is not controlled by any central governing body, there are no clearing houses to guarantee the trades and there is no arbitration panel to adjudicate disputes. All members trade with each other based upon credit agreements. Essentially, business in the largest, most liquid market in the world depends on nothing more than a metaphorical handshake.