Forex Trading
The foreign exchange market (forex, FX, or currency market)
 is a global decentralized market for the trading of currencies.
 The main participants in this market are the larger international 
banks. Financial centers around the world function as anchors of trading
 between a wide range of different types of buyers and sellers around 
the clock, with the exception of weekends. EBS and Reuters' dealing 3000
 are two main interbank FX trading platforms. The foreign exchange 
market determines the relative values of different currencies