26. The system of claim 20 , wherein the media object is a book, and the content comprises body text.
26. The system of claim 20 , wherein the media object is a book, and the content comprises body text. 28. The system of claim 26 , wherein the new metadata includes at least one of: a genre; a target demograph; a proportion of users that complete the book after starting it; an average amount of time taken to complete the book; an average amount of time users spend reading the book in a single sitting; and an average number of sittings it takes for a user to complete the book.