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, and the reader. In addition to providing the first and second
content to the reader, the delivery system also provides at least the
profile information used to select the first content and second content
for delivery to the reader.