I'm halfway through this and I've been reading it forever. For something that so clearly wants to be the next Hunger Games, it's horribly slow and un-engaging. It's trying way too hard to ground itself in our current reality (Boston/Cambridge landmarks, references to semi-current movies, Jon Stewart doing interviews, etc.) and makes the whole book a self-conscious attempt at satire, instead of creating this new world in which gladiator sports have risen. I'll probably finish it because I need to finish SOMETHING, but I wouldn't recommend it. 
 [edit:] now I'm finished. It didn't get better. Still slow to the end, and it's hard to buy into this unique world when the author does everything she can to tell me that it's right here, right now.