Dust jackets, blurbs, shout lines, critics' and authors’ commendations ("quote whores", as they are called in the video/DVD business) all compete for the attention of the browsing reader. Marshall Zeringue recommends ignoring the hucksters' shouts and,instead, applying the McLuhan test.
Marshall McLuhan, the guru of The Gutenberg Galaxy (1962), recommended that the browser open the book to page 69 of any book and read it. If they like that page, then they should buy the book.
Ford Madox Ford says to “Open the book to page ninety-nine and read, and the quality of the whole will be revealed to you."