Patent ID: 8370489

Claim:
A method to monitor media exposure, the method comprising: receiving, at a first internet domain, a first request from a client computer, the first request indicative of access to the media at the client computer; determining if the client computer is known; if the client computer is not known, sending, from the first internet domain, a response to the client computer, the response to instruct the client computer to send a second request to a second internet domain, the second request to be indicative of the access to the media at the client computer; if the client computer is known, logging an impression of the media; receiving, at the first internet domain, a third request from a second client computer, the third request indicative of access to second media at the second client computer, the client computer being a panelist computer and the second client computer being a non-panelist computer; storing first demographic information associated with the panelist computer in association with the logged impression of the media based on the first request, the first demographic information corresponding to a panelist member associated with the panelist computer; and receiving, from the second internet domain, second demographic information associated with the second client computer, the second demographic information received in association with a second impression logged at the second internet domain based on the presentation of the second media at the second client computer.