In my experience this really depends on genre. Some sub-genres are absolutely awful in this regard, while others are pretty good. In my experience, reviews on a

In my experience this really depends on genre. Some sub-genres are absolutely awful in this regard, while others are pretty good. In my experience, reviews on a lot of postmodern books are good as long as you mentally filter out reviews which are basically "I didn't want to read a postmodern book" :).