Oh wow. What a shit ending. 
 Yes, let me write a 3 book series spanning a couple of months and then have a 10 page ending spanning several years. I'm really not a fan of "x-years later" endings. I'm also not a fan of illogical forced bittersweet endings. Clare took the cowards way out with the way she resolved the love triangle. 
 (view spoiler)[ Turning Jem into a Silent Brother, for no reason whatsoever? Especially after making him state that he would rather die then live forever?! She didn't even justify it! She tried to, when Tessa asked him why he did it. And his response was so vague and unsatisfactory. It was just a slap to everyone's face. THEN curing him.. a 100 years later?! *barf* Really unimpressed with the ending. So rushed, devoid of engaging emotions and psychologically illogical. Why didn't she just let the poor boy die? (hide spoiler)] 
 Anyway, other than the crap ending, I enjoyed this book. With all it's cliches and teenage dramas, the series has grown on me. I was delightfully surprised to have seen some character progression throughout the installments (something which is non-existent in fantasy Y.A.). I liked the characters, the cheesy dialogue, even the lame ass poetry introductions started appealing to me. Really, if it wasn't for the insulting ending, I would have given this book a 5 star. 
 Good job though tying this book in with The Mortal Instruments. Good for business.