This is the final book in the Uglies series, and while I liked it, I didn't like it as much as the other three. 
 I think part of it is the fact that it felt tacked on. Like an afterthought. I had low expectations, because the series was originally a trilogy. Perhaps that is why it feels like an afterthought. It certainly doesn't feel like a part of the series. 
 That being said, I liked that we got to see what life was like several years after Tally took down the old ways. And it was interesting seeing life in a different city. And using fame and reputation to decide who gets what? It's an interesting concept, especially with people trying to gain fame, and what they'll do to get it. I almost wished that Westerfeld had focused on that, instead ending up in Singapore trying to figure out what the metal cylinders are for. 
 Tally was interesting in this book, because she wasn't a main character. I liked seeing her through the eyes of someone else. She came across a lot harsher, more violent, and more mentally unstable than she seemed in the first 3 books. Given everything that's happened to Tally, it wasn't a surprise. 
 And what didn't I like? It didn't draw me in the way the rest of the series did. It was slightly more boring than I expected, and the new characters weren't particularly interesting. I just couldn't care about about them. 
 Overall, it gets a 3 out of 5. It was well-paced, and enjoyable, but missing that something special the other books had.