US8713168 Патенты
Methods and apparatus to determine media impressions using distributed demographic information are disclosed. An example method to monitor media exposure involves receiv ing, 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, 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 an intermediary associated with a sub-domain of a second internet domain, the
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