Love this idea of Kevin Duncan's.
A blog about a book he's written which reviews the best Marketing and Business books (1-page each).
In other words, a blog that gives you the content of the book that you might or might not choose to pay for which itself gives you the content of the books it describes which you might or might not go on to read or re-read (phew!)
Reminds me of that great Myles na gCopaleen gag about a (fictional) service that preloves your library's contents for you so you don't have. Think it's in this collection of his satirical columns for the Irish Times.