Just what is foreign?
The alien is a term that refers to the market CABI. The purpose of the foreign exchange markets to essentially make money when a currency goes up or down in value against the other.
To demonstrate this picture that you had $ 100 ($ 100) and you switched to the euro. If the exchange rate between dollars and euro was 0.75 you get 75 euro-cents. So now you have 75. Imagine now that the dollar is weakened against the euro. This would mean to the exchange rate would go down, lets say it was for the down to .65, meaning that a U.S. dollar worth the 65 euro-cents. If you changed your back 75, you had a U.S. $ U.S. $ 115.38, a profit for doing nothing except move your money to another currency and then again. Easy!
So now you know the key to make money on the aliens, you can go down to your local office of the foreign currency and start making trades and earn profits, right? Unfortunately, you may have noticed that in offices of foreign currency have 2 prices, one of the purchase price and sale price of one, the difference between these prices is called the spread, and helps those companies to protect themselves against the movement to short-term market, and allow to make a profit. Using the above example, if the official rate of exchange between our U.S. and euro was $ .75 in exchange for an office you like .73 in the same way when you changed back to dollars in .65, in an office that you probably get something like a .67. essentially this means of obtaining it when you purchase euro less and less dollars when you sell out again, and when you combine this with the commission and other fees, as well as taking into consideration the fact that the currencies of the world move rarely 10%, this has a dramatic and negative effect on their profits.
This answer, then, is the online companies who specialize in foreign trade of foreigners. The reason that the alien is an online market is growing so it is really possible to exchange money online with the online broker of foreigners, you can make trades within your home, and due to the large amount of competition, you can get very favorable conditions such as low fees and good rates. But there really learn if your interested in learning how to make foreigners, but fortunately there is loads of information on the web, you only need to classify what is good information, and it is a hoax.