1. A method allowing a content or service provider to own an anonymous profile of a consumer comprising the steps of: using at least one request sent by the consumer through a communication network, including in the request sent by the consumer identification data of the consumer, automatically substituting, by a processor, the identification data in the network with an alias so as to anonymize the request vis-à-vis said content or service provider, and at least one step during which the consumer defines his preferences with the content or service provider through an Internet web session or with said mobile station and by identifying himself by sending a registration request through the communication network, said registration request being valid during a limited period of time, wherein the identification data is not accessible to the content or service provider and there is a one-to-one and immutable correspondence between the identification data and the alias, and wherein said profile is established by said content or service provider, and in that said profile is updated each time a request is received from said consumer wherein the content or service provider sends a single or multiple-part response that includes the alias to the consumer, within the communication network the alias being substituted with the identification data, and the response being then forwarded to the consumer, wherein the consumer or the service provider on behalf of its customer can define preferences for the response, the possible options including choices among mobile networks messages, USSD, synthesized voice message, fax, e-mail, a link to an Internet or WAP site, or postal delivery.