Forex is one of the most liquid market and the largest in the world, which will not cause us worry about the lack of participants in trade transactions. Forex is also one of the company's largest revenue source, world-class companies such as Motorola and Citibank.Based on data from the BIS (Bank for InternationalSettlements; central bank of central banks worldwide) of April 2007, turnover of transactions in foreign exchange markets reached USD 3.2 trillion. This figure is far greater than the power of liquidity by central banks although the G7 countries, so it will not happen intervention or manipulation of currency movements that are traded