You may have noticed a phenomenon if you use internet quite often, that is, review sites become more and more popular. In fact, the reason is quite reasonable, people like to see what others say about them before they decide to buy products. So customers' reviews are important for them.
For example, if you are going to buy diet pills, the first thing you may do is search for what others say about all kinds of diet pills on diet pill reviews sites, they will help you make a perfect choice. This is why reviews sites become more and more popular.
I think this is a trend. You know, we are living in an open world, so we need all kinds of opinions from all kinds of persons. This can greatly improve the development of our society. What do you say?