Instruct: Classify a given review as either positive or negative.
Query: a mess

I can't understand why publishers can't leave well enough alone. I loved the first edition of this book. I found each successive edition more expensive and less useful. But this is finally the end; I can no longer require my students to purchase it or even recommend that they use it. In its current form it is bloated with unnecessary information, poorly organized, and, from a scholarly point of view, very much suspect. I am disappointed, frustrated, and upset.