This invention relates to customized electronic identification of desirable objects, such as news articles, in an electronic media environment, and in particular to a system that automatically constructs both a "target profile" for each target object in the electronic media based, for ...http://www.google.com.tw/patents/US5754938?utm_source=gb-gplus-share專利 US5754938 - Pseudonymous server for system for customized electronic identification of desirable objects 
