Abstract: This invention relates to a method of generating a population representative of the behaviour of a set of users of a communication network, starting from a reference population composed of known network users listed in a database, characterised in that it comprises steps consisting of: or each site or part of site (s) in a set of sites of interest accessible through the network, determining the number of users (N(s)) who connected to the said site or part of site (s) during a given time period (T), using a traffic analysis system connected to the network for analysing traffic on sites of interest; or each site or part of site determining theoretical number ({tilde over (q)}(s)) of users such that the ratio between this theoretical number ({tilde over (q)}(s)) of users and the number of users (N(s)) who connected to the said site (s) during the given time period (T) is uniform on all sites of interest; sing processing means connected to the database to generate a population of known network users starting from

Abstract: A method for storing navigation information of a set of users of a communication network on a set of internet sites accessible through the network in storage resources connected thereto consisting, for each site of the set of internet sites, in transmitting navigation information of a user connecting to said site by the storage resources. The navigation information comprises a single user's identifier that includes a plurality of characters which are recorded in a cookie installed in the user's navigation station. The method involves storing the navigation information of the user in a database of a set, forming the storage resources of the databases distinctive from each other and selecting the database according to a value of a given character of the user identifier.