1. A method for universal synchronization of profiles of audience members targeted for the delivery of content over a computer network, the method comprising: receiving profile data for a plurality of audience members corresponding to a network of audience member information collection domains, the profile data including a set of profile data the corresponds to a profiled audience member; maintaining an association between the set of profile data and the profiled audience member using a global profile identifier; relating the global identifier to a set of information that facilitates the collection of profile data for the profiled audience member in the network of information collection domains; receiving an authoritative identification of the profiled audience member in connection with activity in the network of audience member information collection domains; and using the authoritative identification to correlate the profiled audience member to the global identifier.