Instruct: Classify a given review into positive or negative sentiment.
Query: Katie.com Offers Unique Insight

Katie.com is a chilling, but extremely well-done book. I was surprised that a teen could write a book that would be so compelling and insightful. In fact, I think that it is fair to say that Ms. Tarbox has more insight into life than most forty year olds. She writes with wonderful clarity in a straightforward manner that doesn't leave you guessing to get her message. The message, in fact, is one that every chatroom visitor should take seriously.