Patent ID: 8412683

Claim:
A method for determining delivery hierarchical information for an Ad unit, the method comprising: at a server receiving, from a user computer system via a network, location information associated with delivering the Ad unit presented on a webpage accessed by the user computer system, the location information comprising at least URL information associated with the Ad unit, determining if at least one of a previously stored plurality of signature information matches with at least a portion of the received location information, wherein each of the plurality of signature information is associated with a single entity and with a first and a second regular expression specific to that entity, and wherein determining comprises applying the first regular expression associated with at least one of the plurality of signature information to at least the URL information, identifying domain information associated with the received location information that matches with at least one of the previously stored plurality of signature information, wherein identifying comprises applying the second regular expression associated with the at least one of the plurality of signature information to at least the URL information, extracting the identified domain information from the received location information that matches with at least one of the previously stored signature information, wherein extracting comprises extracting the identified domain information from the URL information, and generating at least partial delivery hierarchical information based on the extracted domain information.