Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Not even for geeks.

Unless you're a PERL weenie and just love all the technical jargon and obscure set up code in this book -- forget it. This is just the book for such geeks, and not a book for your average PHP or Java programmer.If you want to stop spam, rather than go back for an advanced degree in geekiness, (by which time all the spam techniques will have changed anyway) just let your ISP provider do their best. You won't be able to do much better with this book, even if you COULD implement it. Which the average reader never will.