Useful online book on statistics. A work in progress, but looks very valuable.
Self publish and get listed on Amazon. Clever... :-)
800 CEO Read accounts for a large chunk of Seth Godin's early book sales. Online book store, I'm assuming focused on business books.
A natural seaweed gel by a holistic herbalist that works well to reduce outbreaks of herpes.
A book on how to holistically deal with herpes and the stigma attached.