Firstly, I began reading this novel with the fabulous Kereesa, which was tons of fun and the discussion with her as we read most likely added to how I felt about it. I found the ideas behind this book really interesting, though I felt it could've been executed better. 
 My absolute favourite thing of XVI was the slang. Usually in a book you see a few choice words, followed by a paragraph long explanation of what they mean and their full on history. However, Nina speaks to the reader as though the reader is there; none of the slang words (as well as governmental descriptions et al.) are really explained, the reader just figures it out. This actually reminded me of A Clockwork Orange which does a similar thing with slang. Being teenagers though it's not far from what you'd expect. This intergration is what built a world I could believe, even when it seems unlikely. 
 Aside from that though, I think some other elements needed to be examined more as they seemed to be contradictory to themselves. The characters were okay, Nina felt the most built with the others moderately built except for Sandy, who felt really throw away from the beginning, which made it all the more upsetting when her death isn't particularly affective, especially when her character has a lot of potential to show the effect on the girls who follow the Media.. 
 Overall, it was an alright, quick read that had some interesting ideas but could've used more development.