1. A system in a computer networked environment for generating monitoring information about a display of content, comprising: a content provider site that stores a content file, wherein the content file references the content and at least one computer executable monitoring function to cause collection of monitoring information about the display of the content; and a content display site to receive the content file from the content provider site and to display the content, wherein the content display site receives the at least one monitoring function as part of receiving the content file, the content display site executes the at least one monitoring function when the content file is accessed, the at least one monitoring function performs monitoring responsive to an event notification passed from a host environment at the content display site to cause monitoring information about the display of the content to be collected and transferred to a network site without providing a user at the content display site an indication that the monitoring information is being collected, wherein the content display site does not have the at least one monitoring function prior to receiving the content file from the content provider site, wherein the network site did not transfer the content file from the content provider site to the content display site, the network site is different from the content provider site, and the network site is adapted to receive the monitoring information.