I read it quickly because I wanted to see how it all ended. I liked it better than most of my friends did. But there were problems. I'm not sure how I can go into them without spoiling the book. Let's just say the major plot points of this book felt like a cop-out to me. It felt like she didn't have a vision when she started the series, didn't anticipate the success, and she was grasping at straws at the end.
I enjoyed the book in the sense that I had heard so many negative things about it from my friends, that I thought it was going to royally suck. And when it didn't suck, I was pleasantly surprised. I think it's a must-read to conclude the series, but it's a bit disappointing.