Originally Posted by speakingtohe
I doubt that many would print a bad blurb/review in a book they were publishing. Also seems a tad unlikely that a well known author would write a glowing review of a book they found to be mediocre or worse.
The well known writers get paid for writing them. It's only the midlisters who do it for free, they do it just to get their name on a few extra covers. Well known writers don't need that, and will have more corporations asking for them.