The topic of teen suicide would probably put this into the "iffy" category for me regardless. But beyond the topic, the concept of the suicide getting power over the living by "forcing" them to listen to her tapes, while it was compelling and suspenseful as a story device, seemed to me to play right into the suicidal notion of "making them all sorry when I'm gone". The manipulation post-suicide thing was repulsive -- personally, I would have called the police if I received such tapes. So it took a big suspension of disbelief for me to believe in this chain of recipients going ahead and playing along with the dead girl by listening to her tapes. Thus, for about the first half of the book I wouldn't even have given it three stars; I found the device dubious and manipulative, and both Hannah and Clay overwrought, and I almost gave up on the book several times. However, somewhere around halfway through the book it started connecting better for me. As Hannah's story got past indignation over some relatively petty events to some truly distressing occurrences, and as her "voice" lost the snarkiness and got more despairing, and as Clay's role was clarified, and with the couple of "real time" tape records as more reliable narration, Hannah's downward spiral became believable and truly moving. So I ended the book still angry (including at Hannah and some of her choices), but I'd give it 4 stars -- partly because it was so successful at making me angry! But a depiction of achieving a post-suicide confrontation of and revenge on those who've wronged you is a rather romantic take on suicide, so I consider it iffy for teens.