A communication terminal sends an access request to a WWW server connected to a network to a relay server in the network. The relay server sends this access request to the WWW server and receives display data from the WWW server and sends an advertisement ID specifying an advertisement satisfying a predefined...http://www.google.co.uk/patents/US20020165773?utm_source=gb-gplus-sharePatent US20020165773 - Method and system for distributing advertisements over network
