Forex trading scams are a concern for even the savviest investor. Foreign exchange fraud has been on a rise for the best couple decades, leading the Commodities Futures Trading Commision and other agencies to deploy task forces analyzing and curtailing schemes. The ingenuity of fraudulent schemes, whether they’re based on phony software or creating fake accounts, increases, but their telltale signs remain largely the same. Steer clear of forex brokerages promising sure wins, fast results, or secret formulas for success. The market has proved time and again that there are no shortcuts. Scammers bank on the human propensity to believe otherwise.
Just like stocks, you can trade currency based on what you think its value is (or where it's headed). But the big difference with forex is that you can trade up or down just as easily. If you think a currency will increase in value, you can buy it. If you think it will decrease, you can sell it. With a market this large, finding a buyer when you're selling and a seller when you're buying is much easier than in in other markets. Maybe you hear on the news that China is devaluing its currency to draw more foreign business into its country. If you think that trend will continue, you could make a forex trade by selling the Chinese currency against another currency, say, the US dollar. The more the Chinese currency devalues against the US dollar, the higher your profits. If the Chinese currency increases in value while you have your sell position open, then your losses increase and you want to get out of the trade.
a MARKET engaged in the buying and selling of FOREIGN CURRENCIES. Such a market is required because each country involved in INTERNATIONAL TRADE and investment has its own domestic currency and this needs to be exchanged for other currencies in order to finance trade and capital transactions. This function is undertaken by a network of private foreign exchange dealers and a country's monetary authorities acting through its central banks.
The need to exchange currencies is the primary reason why the forex market is the largest, most liquid financial market in the world. It dwarfs other markets in size, even the stock market, with an average traded value of around U.S. $2,000 billion per day. (The total volume changes all the time, but as of August 2012, the Bank for International Settlements (BIS) reported that the forex market traded in excess of U.S. $4.9 trillion per day.)