1. A computer-implemented method for managing privacy rights of a user related to delivery of content, the computer-implemented method comprising: creating a global privacy policy for the user, the global privacy policy including a mapping of a plurality of anonymous identifiers associated with the user, each anonymous identifier in the plurality of anonymous identifiers associated with the user being associated with a requesting source having been used by the user to access content, wherein each anonymous identifier in the plurality of anonymous identifiers associated with the user includes an identifier, session information and any enumerated preferences of the user, either inferred or explicitly defined, the enumerated preferences of the user being used to determine content to be delivered to the user in response to received requests from the user, wherein creating the global privacy policy includes aggregating privacy policy information from each anonymous identifier in the plurality of anonymous identifiers associated with the user to form the global privacy policy, wherein creating the global privacy policy further includes resolving a name for the requesting source associated with a respective identifier, and wherein identifiers associated with the user are linked using a secret key derived from a seed that is unique to the user; providing a global privacy management interface that: presents a selection tool that displays privacy options and interests to the user to review, the privacy options and interests including controls for presenting a list of inferred interests that are associated with the user and an indicator for one or more devices having been used by the user to access content or perform actions that gave rise to the list of inferred interests; and presents a de-selection tool that displays individual interests from the list of inferred interests that are associated with the user to de-select on a per-device or global basis, wherein the global privacy management interface presents the name for requesting source when presenting privacy selections associated with at least an anonymous identifier in the plurality of anonymous identifiers associated with the user; and determining, in a server system, content to deliver to the user in view of the privacy options and interests, and the individual interests from the list of inferred interests.