Each one of us is put under every day by the hundred of advertising impacts, and every time becomes more difficult that a message can arrive indeed at the potential client. The companies continue spending immense amounts of money in advertising campaigns, of which hardly its effectiveness can be measured. Perhaps in some cases they can get to be effective, but it would dare to me to say that in most of the cases they are very little efficient. In addition, intrusive marketing is based on interrupting the activity of the consumer, and this more and more is penalized on the part of this one, until the point that even can harm the image of the mark advertiser. As opposed to the tendency to the interruption to send messages, it is extended the idea that effective marketing is in establishing "conversations" with the clients and the prospectos throughout the time. These "conversations" can only be established if the possible client gives permission us to initiate them and to go deepening little by little them. In this process, marketing in Internet can help us much.