What adds interest to this book on top of the unique plot line is the fact that the story of the Lisbon girls is told through an outside party. This adds mystery and intrigue to the Lisbon girls. As the reader, you are made into one of the neighborhood boys that are so curious about the girls because you only know as much about the Lisbon sisters as the boys do.
It's hard to form a lot concrete thoughts about this novel, since most of the thoughts I have related to it are about real life more so than the story. Does that make sense? It is one of those books that you have to read for yourself in order to understand it and its concepts and message. I just saw that there is a Sparksnotes page on this book, I would love to check out what they have to say about this book.
I would also love to see the film version of this story directed by Sophia Coppola.