Abstract: Methods, apparatus, systems and articles of manufacture are disclosed to associate geographic locations with user devices. An example method includes receiving, at a server, a request including source identifying information and monitoring information, the monitoring information sent by a device in response to accessing media, the source identifying information associated with a router connecting a private network to a public network. The example method also includes identifying a location identifier of the device based on the source identifying information and the monitoring information. The example method also includes attributing a geographic location to the device based on the location identifier.

Abstract: Methods and apparatus to collect impressions associated with over-the-top media devices are disclosed. Example disclosed methods involve receiving, at a first Internet domain, a first request from a first client device, the first request including a client device identifier associated with a second client device, and associating the client device identifier with demographics at the first Internet domain, the demographics corresponding to a user of the first client device. Example disclosed methods involve receiving, at the first Internet domain, a second request from the second client device, the second request indicative of media accessed at the second client device, and storing an impression of the media at the first Internet domain by associating a media identifier obtained from the second request with the demographics based on the same client device identifier being associated with the media identifier in the second request and being associated with the demographics.

Abstract: An example method to monitor media exposure involves 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. The example method also involves determining if the client computer is known. If the client computer is not known, a response is sent from the first internet domain 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 access to the media at the client computer. If the client computer is known, an impression of the media is logged.

Abstract: An example involves, in response to a first request from a first client device, logging a first impression in association with a first identifier corresponding to media accessed by the first client device that generated the first request, and sending a communication to the first client device. The communication is to cause the first client device to send the first identifier to a database proprietor in association with a cookie identifier of the first client device. Second impressions are logged in response to second requests received from second client devices. The second impressions are associated with the first identifier and correspond to access to the media by the second client devices. A report is generated based on the first impression and corresponding first demographic information from the database proprietor, and based on the second impressions and corresponding second demographic information from an audience measurement entity different from the database proprietor.

Abstract: An example method includes facilitating installation of a data collector on a media device; collecting, via the data collector, a media identifier indicative of media presented at the media device; encrypting a user identifier that identifies the user of the media device, the encrypting of the user identifier based on a first encryption key corresponding to a first database proprietor having first user information associated with the user identifier; encrypting a device identifier that identifies the media device, the encrypting of the device identifier based on a second encryption key corresponding to a second database proprietor having second user information associated with the device identifier; sending the media identifier to a data collection server; sending the encrypted user identifier to a second server associated with the first database proprietor; and sending the encrypted device identifier to a third server associated with the second database proprietor.

Abstract: An example method to monitor media exposure involves 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. The example method also involves determining if the client computer is known. If the client computer is not known, a response is sent from the first internet domain 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 access to the media at the client computer. If the client computer is known, an impression of the media is logged.

Abstract: An example method includes receiving a media identifier and an impression identifier from a device, the media identifier being indicative of media presented at the device; receiving the impression identifier in association with first user information from a first database proprietor as a result of the first database proprietor obtaining a first identifier sent from the device, the first identifier identifying at least one of the device or a user; receiving the impression identifier in association with second user information from a second database proprietor as a result of the second database proprietor obtaining a second identifier sent from the device, the second identifier identifying at least one of the device or the user; identifying the first and second user information as associated with a same user based on the impression identifier; and associating the first and second user information with the media identifier.

Abstract: An example method involves receiving, at a first internet domain, a first request from a client device, the first request indicative of access to media at the client. The first request includes identifying information identifying the media. A substitute value is generated at the first internet domain, the substitute value corresponding to the identifying information and obfuscating an identity of the media. If the client is not known, a response including the substitute value in place of the identifying information is sent from the first internet domain to the client. The response instructs the client to send a second request to a second internet domain, the second request includes the substitute value to hide the identity of the media within the second internet domain. If the client is known, an impression of the media is logged without sending the second request to the second internet domain.

Abstract: Methods and apparatus to monitor media presentations are disclosed. An example method includes storing a consent indicator at a central facility in connection with a user of a media device; and, when monitoring data representative of an exposure to media of the user is received, determining a value of the consent indicator; when the value indicates that the user is an opted-in user, storing a first type of exposure indication in association with the first media, the first type of exposure indication to include personally identifying information associated with the user stored in connection with the first media; and when the value indicates that the user is an opted-out user, storing a second type of exposure indication in association with the first media, the second type of exposure indication to omit the personal identifying information associated with the user from being stored in connection with the first media.

Abstract: An example method includes receiving a media identifier and an impression identifier from a device, the media identifier being indicative of media presented at the device; receiving the impression identifier in association with first user information from a first database proprietor as a result of the first database proprietor obtaining a first identifier sent from the device, the first identifier identifying at least one of the device or a user; receiving the impression identifier in association with second user information from a second database proprietor as a result of the second database proprietor obtaining a second identifier sent from the device, the second identifier identifying at least one of the device or the user; identifying the first and second user information as associated with a same user based on the impression identifier; and associating the first and second user information with the media identifier.

Abstract: An example method involves receiving, at a first internet domain, a first request from a client device, the first request indicative of access to media at the client. The first request includes identifying information identifying the media. A substitute value is generated at the first internet domain, the substitute value corresponding to the identifying information and obfuscating an identity of the media. If the client is not known, a response including the substitute value in place of the identifying information is sent from the first internet domain to the client. The response instructs the client to send a second request to a second internet domain, the second request includes the substitute value to hide the identity of the media within the second internet domain. If the client is known, an impression of the media is logged without sending the second request to the second internet domain.

Abstract: Methods and apparatus to determine impressions using distributed demographic information are disclosed. An example method includes obtaining media impression information from a client device for a media impression, obtaining demographic information corresponding to the client device from at least three database proprietors, and determining a demographic characteristic associated with the media impression based on the demographic information obtained from the at least three database proprietors.

Abstract: Methods and apparatus to determine ratings information for online media presentations are disclosed. An example method includes receiving pingback messages corresponding to presentation of media at a client device, determining a portion of the media that was presented at the client device based on the pingback messages, obtaining demographic information associated with the client device, and determining a demographic characteristic associated with the presentation of the portion of the media based on the pingback messages and the demographic information.

Abstract: Example methods and apparatus to determine impressions using distributed demographic information are disclosed. A disclosed example method to monitor media exposure involves 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. The example method also involves determining if the client computer is known. If the client computer is not known, a response is sent from the first internet domain 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 access to the media at the client computer. If the client computer is known, an impression of the media is logged.

Abstract: Example methods and apparatus to determine impressions using distributed demographic information are disclosed. A disclosed example method to monitor media exposure involves 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. The example method also involves determining if the client computer is known. If the client computer is not known, a response is sent from the first internet domain 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 access to the media at the client computer. If the client computer is known, an impression of the media is logged.

Abstract: Example methods and apparatus to determine impressions using distributed demographic information are disclosed. A disclosed example method to monitor media exposure involves 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. The example method also involves determining if the client computer is known. If the client computer is not known, a response is sent from the first internet domain 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 access to the media at the client computer. If the client computer is known, an impression of the media is logged.

Abstract: Example methods and apparatus to determine impressions using distributed demographic information are disclosed. A disclosed example method to monitor media exposure involves 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. The example method also involves determining if the client computer is known. If the client computer is not known, a response is sent from the first internet domain 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 access to the media at the client computer. If the client computer is known, an impression of the media is logged.

Abstract: Example methods and apparatus to determine impressions using distributed demographic information are disclosed. A disclosed example method to monitor media exposure involves 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. The example method also involves determining if the client computer is known. If the client computer is not known, a response is sent from the first internet domain 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 access to the media at the client computer. If the client computer is known, an impression of the media is logged.