Until the appearance of the scale economies, one of the existing models was the one of the establishment to by smaller multiproduct, in which the proprietor knew her clients, its tastes, its spending power and, in addition, it had the confidence and the permission of these to offer new products to them that could interest to them. Therefore, the center was the client and fidelizar-lo was tried to be able to sell the possible maximum to him of products throughout all its life. Obvious, this could only be done on small scale and with a reduced number of clients. With the arrival of the massive production, the companies were centered in the product, producing it to reduced costs, spreading it massively and to generate the Maxima quota of market for that certain product. Nevertheless, the arrival of Internet allows, somehow, to return to the origins, with a great difference: now already it is possible to take care of great scale customized, that is to say, to an immense amount of clients at the same time. The objective now is to fidelizar long term to our more profitable clients, obtaining than they give progressively more confidence us and they buy products and services more and more to us. Really, maximizing what the value of life of the client is denominated.