Book Stuff. How important is a book blurb?

Often it is the editor or some other person from the publishing house who writes the book blurb/jacket description. The publisher usually has a better idea of what elements of the story will most appeal to readers who pick up the book at a glance.
Below is an example of how important it is to get the blurb right. A professional reviewer and author, Christina Philippou, gave ACoPF a wonderful 5-star rating and listed it in among the top 10 books of 2015 on her blog - Wow! But this shows how the...