1. A method to monitor media exposure, the method comprising: sending to a client computer, by executing an instruction with a processor serving a first internet domain, a response to a first request, the first request received at the first internet domain and indicative of access to media at the client computer, the response to instruct the client computer to send a second request to an intermediary serving a sub-domain of a second internet domain, the second request to be indicative of the access to the media at the client computer, wherein the intermediary is to transmit first data about the second request to a data collection server of an audience measurement entity and second data about the second request to an entity of the second internet domain, wherein the intermediary is to, in response to determining that the second request does not include a cookie associated with the second internet domain, send a second response to the client computer, the second response to instruct the client computer to send a third request to a second intermediary associated with a second sub-domain of a third internet domain, the third request indicative of the access to the media at the client computer; and logging an impression of the media.