A document delivery system that provides first content and second content to a reader over a network, such as the Internet. The delivery system selects content for the reader based upon profile information. The profile information may relate to any one or more of the first content, the second content,...http://www.google.ca/patents/US6886006?utm_source=gb-gplus-sharePatent US6886006 - Method and apparatus for disclosing profile information to a reader
