Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Great Low-Tech Fun

Zodiac is different from Stephenson's other books - it's short (only 300 pages), low tech (although there is a little chem discussion), and focuses primarily on one character. A quick, fun read and an interesting commentary on environmentalism and terrorism, considering that it was written in '88. I love its tribute to Boston, but, frankly, if I didn't know the area so well I might not have enjoyed the book as much. It's not Snow Crash or Crypto, but it is definitely worth the read.