A method of associating a content object with metadata uses a combination of a content identifier and a bounding identifier to enable handling of disparate sets of content identifiers for content objects with potentially conflicting content identifiers. The method receives a content identifier for a...http://www.google.de/patents/US20070208711?utm_source=gb-gplus-sharePatent US20070208711 - Rules Driven Pan ID Metadata Routing System and Network
