Forex online trading is a potentially lucrative activity where massive returns can be quickly realized. Forex is in reference to the foreign exchange markets where more than a trillion U.S. dollars in currencies are exchanged each day. Given the huge volume, currency orders are swiftly filled. Because this market takes place on the world stage, there are always potentially profitable plays lurking. In addition to offering solid forex platforms from which to trade, forex futures trading provide leverage to their clients. Margin requirements can be as low as 0.05 percent or 1/200.