Abstract: A method of serving targeted content messages for display in a website accessed in a browser program of a networked computer communicatively connected to a network at a network address for communications, delivers uniquely targeted content messages displayed in websites viewed in web browsers. The method includes placing a script device in a website file, processing the website file, together with the script device by a particular web browser on download of the website file, including by determining the network address of the networked computer, determining an identifier of the website file, and sending an artifact representing the network address and the identifier over the network to a server computer.

Abstract: A method for identifying segments of a population of user devices communicating on a communications network. The segments correspond to user devices of the population exhibiting comparable behavioral patterns detectable by the communications network. A plurality of marketing systems are accessible on the communications network, and each of the plurality of marketing systems include respective use data corresponding to respective ones of the population for the marketing system.