This is one of those books that makes you think a lot. It's so realistic. Even though it's supposed to be a dystopia, it's so close and true to our society. How young girls see themselves, compare themselves, do everything to fit in, do everything to be "perfect" in order to be love by everyone, to be love by boys. It was so exhausting to be in freida's head all the time because you go through everything, every single thought of hers: her obsession with her weight, her obsession to be accepted by every single other girls, her obsession to please everyone, her fears to not be good enough for anyone, and so on. You follow her in every bad decisions she makes thinking it's the best one (like having sex with the guy thinking he might choose her if she gives him what he wants), until she finds herself completely alone. 
 You can see the pressure the society put on young girls. And you can see that the pressure is completely different for the boys: they don't have to have that perfect body, they don't have to be liked by everyone, they are the one choosing the girls, saying what they can be, what they can do. The boys are the important ones (in the book, their names are with a capital first later while the girls are not, like they are not so important: freida/Darwin). 
 The girls having sex are called "whores" but the boys are perfectly fine. And this is exactly how our society works. The girls are blamed for everything, called names for their behavior, but it's in the "nature" of the boys so we can't blame them. 
 I'm older now, so I'm not in the same state of mind than when I was younger. I used to feel like I needed to change to fit in: lose weight, dress a certain way... I think it's important to show to younger girls that it's okay to be the way they are, it's important to show them that it's okay to be themselves. This book did an excellent job by pointing everything that is wrong in our society. And more people should read this book.