Methods and apparatus to determine impressions using distributed demographic information

A method to monitor media exposure, the method comprising:

• sending, from a first internet domain to a client computer, a response to a first request indicative of access to media at 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 second request to be indicative of the access to the media at the client computer;
• instructing the intermediary to receive the second request associated with the sub-domain of the second internet domain;
• instructing the intermediary to extract a cookie and an identifier associated with the media from the second request;
• and
• instructing the intermediary to transmit the cookie and the identifier to an entity of the second internet domain;
• and
• logging an impression of the media.

A system to monitor media exposure, the system comprising:

• an impression monitor of a first internet domain to:
• send, from the first internet domain to a client computer, a response to a first request indicative of access to media at 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 second request to be indicative of the access to the media at the client computer, and
• log an impression of the media;
• and
• the intermediary 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.

A system to monitor media exposure, the system comprising:

• an impression monitor of a first internet domain to:
• send, from the first internet domain to a client computer, a response to a first request indicative of access to media at the client computer, the response to instruct the client computer to send a second request to an agent associated with a sub-domain of a second internet domain, the second request to be indicative of the access to the media at the client computer, and
• log an impression of the media;
• and
• the agent to:
• receive the second request associated with the sub-domain of the second internet domain,
• extract a cookie and an identifier associated with the media from the second request,
• transmit the cookie and the identifier to an entity of the second internet domain, and
• transmit an indication of the second request to an entity of the second internet domain.

A storage device or storage disc comprising instructions that, when executed, cause a machine to at least:

• send, from a first internet domain to a client computer, a response to a first request indicative of access to media at the client computer, the response to instruct the client computer to send a second request to an agent associated with a sub-domain of a second internet domain, the second request to be indicative of the access to the media at the client computer;
• instruct the agent to receive the second request associated with the sub-domain of the second internet domain;
• instruct the agent to extract a cookie and an identifier associated with the media from the second request;
• and
• instruct the agent to transmit the cookie and the identifier to an entity of the second internet domain;
• and
• log an impression of the media.