The network spread the exchange for a long time, let alone the exchange, there are many other customers, customers, test customers, vickers, vickers, reviews, pringles are very much, but I think the exchange is relatively close to each of us, especially young people. For example, today's young people change their mobile phones as easily as they change their clothes. For example, we see in the media the legend of a young man in the United States who finally exchanged a paper clip for a villa, we seem to feel very curious, which depends on goods exchange websites.
To swap means to barter, to exchange, or to trade secondhand. Some websites claim that they are a platform for the disposal of idle items, some let the household manager think that they have found a platform for the adjustment of family resources, some are more like people are tired of the new and the old, and some are more like a platform for doing some simulated small business, in the barter network centered on exchange