A system and method for rating a document comprising an image are provided. A document is received for distribution. Rating information associated with the document is received from one or more rating entities. At least one of said one or more rating entities comprises a processor to determine rating...http://www.google.com.hk/patents/US20050251399?utm_source=gb-gplus-share專利 US20050251399 - System and method for rating documents comprising an image
