With the help of the Internet, shopping is not a difficult job. Just click your mouse to choose the article you like, and the shopping is finished. You needn't step out of the room. It seems easy and quick. But there's always a trap online. Shopping on the Internet has a lot of advantages, of which the most important is perhaps its convenience. People don't have to waste a lot of their energy and precious time to go from one shop to another to choose the commodities they like. However, shopping on the Internet also has its disadvantages. The first disadvantage is that the consumers can't see the goods or try them on personally. Sometimes, the real goods may not be the same as what they have seen on the computer. The second disadvantage is that some shops on the Internet are not registered.