Does Anything Pack More Clout in Publishing Than a Blurb?

"Powerful ... A tale that is as forceful as it is affecting, as fierce as it is resonant." -- Michiko Kakutani, The New York Times.

"Unflinching, gorgeously written."  -- San Francisco Chronicle.

Those are known as blurbs, or "short descriptions of a book, movie, or other product written for promotional purposes and appearing on the cover of a book or in an advertisement."

When it comes not just to attracting purchasers, but also to getting a book through the conventional publishing mill, nothing is more important than blurbs, it seems.