Dutch mail order company Wehkamp doesn't just offer the possibility to write a review on any product at their site: they now actively ask people to write a review two weeks after they have bought a product. (mf, Dutch). Reviews become relevant when you know for sure that someone did buy the product. In a next step, Wehkamp will connect to social networks. You then don't only see reviews, but also what your friends thought of it. Then brands get better at understanding their customers. If Wehkamp then can also advise us if a product goes well with a product we bought earlier (like the style or color for fashion, or compatibility for computer devices), then they will take the dialogue to a next level. As long as Wehkamp keeps striving to have a complete range of products, consumers won't have any reason to go somewhere else.