Futures

Trading Futures is actually trading commodities. Traders who trade these commodities, trading them for certain amount, at a specific time as a certain price. The contract to deliver these commodities is the Future contract.

The Future commodities can be both agriculture items and nature items.
Items like Coca, Oil, Natural gas, Cotton, Coffee. All the commodities, and there are dozens of them are tradable and online, in the Futures market. All commodities and therefore the futures can change value very fast and on the real time, because of changes in the weather conditions, political issues and revolutions and people's expectations from the market and from the future to come. 
Futures contract: A legally obligation for the holder of the contract (of the commodity) to buy or sell a particular share at a known price and location at a specific set date.

Trading Futures online is a need for some people, since they need to make sure they will have the specific commodity on time. These people need to protect their businesses against fluctuations in the prices. A baker has wheat to bake his special bread at a certain date. He is not sure that there's going to be enough wheat available at this date. He can now buy a futures contract to guarantee that he'll have it. Whether the price of wheat goes up or down, he knows he will have it and he knows the price. If price goes up, he will earn from it, if prices will go down, he will loose – both ways, he will have the wheat for the bread.
Future traders are buying and selling these commodities and make the right to keep them until next purchase. This market is more risky than the Forex market, but also more revenue.