Is here, where you have to admit to customers that generate a greater margin of purchase and profit in a company. They are these people who will be given special treatment and not neglect them ever, sending updated information, inviting you to special events, and performing a myriad of custom activities that will generate a level of trust and loyalty by the customer, making it feel important and do not change their purchasing habits or to improve them thus preserving the best consumers. In the new marketing, each customer has a value for the company that is determined by comparing what brings you in shopping, references to other customers, information about their tastes and preferences with what it costs him assist you with sightseeing, faxes, e-mails and maintain internal system where all the information that allows you to individualize it is handled. David Green often expresses his thoughts on the topic. To determine the value of each customer, companies realize that they are all different, even, some cost you more than what you give (clients below zero). This indicates that it has no sense to improve loyalty of everyone, but in shape selective, making it necessary to identify the interesting. This uses a bar chart in which are grouped in descending order of their value, which can display the more valuable, as also to the second best (SMC) and you can continue with third parties until it reaches those who are of the subzero group. It is clear, that the most interesting keep loyal, are the most valuable, those who are likely to already have them are identified and to have them treated differently. However, it is also important to know who are the Group of the SMC, and also the third best, since there is a great potential of selling them products that are not buying, and thereby increase their contribution to the company’s profitability. 3 Customer interaction: is here, which starts as of the Marketing strategy one by one.