Question: Have you ever bought a book because of a bad review?
I have... but not just because of a bad review. I usually read the bad as well as the good before buying a book, because I like to hear both sides. Often the things being criticised are actually plus points in my view, e.g. I like books that are very fast paced, and that often crops up as a negative. So some negative reviews make a positive contribution to my decision to buy.