Pros? The story is told through a range of perspectives
Cons? The story is told in bits and pieces and sometimes, just when it starts to get really good, the "interview" ends and you're on to another character.
Overall, I liked the book but it didn't have me on the edge of my seat. I can appreciate the style in which the story slowly unfolds through the eyes of various people; but occasionally I felt the voices were contrived. Rather than reading like a book, sometimes, the text reads more like a script. And at times, I could image a character as an actor sitting on a stool onstage, speaking his monologue. But the monologue seems more like someone reading lines, as opposed to speaking extemporaneously...if that makes sense outside of my little head.
Anyway, if you're into zombies, give it a go. It may not be the best one, but it may not be the worst either.