The Web has become the main channel of consumer expression in recent years. They post various comments, opinions, and other contributions regarding the business benefits that represent in final the voice of the customer. They build and destroy the e-reputation of the company, and they are a source of progress, even of innovation for this one. They are also a source of influence on prospects that are consulted during their purchase process. This is why it is important to facilitate the expression of its customers and listen to them, but also to study the content they generate.