I also disagree with you on this. Now are you telling us that trade by barter is a Currency? franky1 I know that you know what you are saying but you were in  hurry or thinking of another thing to do so you missed what you wanted to say. Currency is not anything but it is a well designed paper or coin that is use to exchange goods and services. And from your definition yam with sugarcane exchange is also a Currency and that is wrong. Trade by barter is not a Currency but it is goods to goods exchange. As for the Op. Wow!! This is the second time I am seeing someone that doesn't understand the meaning of bitcoin and a anti bitcoin in the forum. For your information all the exchange you mentioned and the definition of Currency and the all the features of money and currency are found in bitcoin. Any unit of money you used in buying things, bitcoin can also be used to bitcoin that thing with the same price. Example. If you you used $20 to buy something, you can use 0.0006 bitcoin  to pay for that thing if the seller accepting bitcoin. So bitcoin automatically a Currency and nothing can change that fact. Please don't confused yourself and other newbies.