When I heard, before the book came out, that there would be more stuff from Jacob's point of view, I thought "Great, more Jacob (not happy)" Not that I don't love Jacob, but, I really wanted the conflict Jacob-Edward-Bella to end and move on to something else. But, as so many times before, Stephanie just upped everything another notch, and --wow-- the Jacob part was so good. Jacob is a little bit the voice of the truly human good guy, the real human in all of us, and hearing from Jacob's point of view makes us able to cry for Edward, hold our breath in fear for Bella's life, in ways we haven't been able to do before.
Plus, the chapter titles were a delight!
Also, it is another coming of age part of the story, with Jacob taking his place among the leaders of his people, Jacob moving forward in his life in so many major ways, with Leigh, with Edward and the Cullens, and especially with Nessie. Wow!