Methods and apparatus to determine media impressions using distributed demographic information

摘要

METHODS AND APPARATUS TO DETERMINE MEDIA IMPRESSIONS USING DISTRIBUTED DEMOGRAPHIC INFORMATION Examples to determine media impressions using distributed demographic information are disclosed. Some disclosed example methods involve sending a request to an impression monitor system in response to detecting a login event at a client device. The login event is associated with an Internet-based service of a first Internet domain different from a second internet domain of the impression monitor system. Such disclosed example methods also involve sending a login reporting message to a database proprietor that provides the Internet-based service. The login reporting message including first and second cookie identifiers. The first cookie identifier is associated with the first Internet domain of the Internet-based service, and the second cookie identifier is associated with the second Internet domain of the impression monitor system. 11984008_1