Abstract: A method in a proxy server (121) to provide anonymous access for a client device (101) to a network (110). The proxy server (121) receives request for a resource on the network (110) from the client (101), which resource is available on another server (122). The proxy server (121) removes all information identifying the client (101) from the request, and transmits the resulting anonymous request to the other server (122). The response from the other server (122) is passed on to the client (101). Also, an advertisement (210) is sent to the client (101) as a means of generating revenue. To target the advertisement (210), the client (101) maintains a user profile for the user and sends a subset of the user profile as a current interest profile to the proxy server (121). The proxy server (121) then selects the advertisement (210) based on the current interest profile.