1. A method allowing a content or service provider ( 16 ) to own an anonymous profile ( 26 ) of a consumer ( 14 ) using at least one request sent by the consumer through a communication network ( 22 ), wherein the request sent by the consumer includes identification data of the consumer, wherein the identification data is substituted in the network with an alias so as to anonymize the request vis-a-vis said content or service provider, 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. characterized in that said profile is established by said content or service provider, and in that said profile is updated and completed each time a request is received for said consumer.