10. A method according to claim 9 and comprising: if a rating received by the client terminal indicates that the Uniform Resource Identifier is trusted, then downloading the data from that Uniform Resource Identifier into a web browser window, and if a rating received by the client terminal indicates that the Uniform Resource Identifier is malicious, then blocking the downloading of data from that Uniform Resource Identifier into a web browser window.
9. A method according to claim 1 , wherein the client terminal comprises a web browser and the method further comprises displaying in a web browser window a determined rating.