This one is easy to explain, as it is one of the many overlooked aspects of Web 2.0 function and design. In short, a Webinformation ease (keep in mind that a Web user searches for your edocument. All you have to do is post a completed product. For example ...
If you understand that an inordinate amount of revenue is generated when YouTube videos are propagated throughout the Internet--specifically because users copy YouTube embed HTML to personal Web sites and blogs ...
Then you understand that all you have to do to spread advertisements around the Internet -- who knows where -- is by providing content that may be easily inserted in places other than where it originated: Saved on someone's hard drive, for example.
For example, load a chapter from one of your published books that contains an internal Amazon Associates Program link to the book at Amazon. Ensure that your edocument's properties (very similar to regular Web page meta data) are correctly entered, and load it in as many formats as you know how to your Web page or blog: chapter, chapter PDF ...