The whole world is making a profit.

I am very keen on buying books, but I find that I am so powerful: I can fool a bunch of colleagues and use my account to buy books. In this way, an ordinary member has been upgraded to a diamond member.

At some time, I found the rebate network. After using it for a period of time, I found that there was a problem with tracking orders. Obviously, I couldn't find the order, later, I thought that I would not be able to do anything about this rebate, so I gave up.

Today, I suddenly found out that QQ has a website for interest (although it has been out for a while), and I was interested again.

For a brief analysis, it is better to pay back the network, because although it is a rebate, everyone still wants to receive cash, rather than not seeing the points. However, I hope the two companies will do better in tracking orders, so that they will not disappoint users and will be able to retain customers.