Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: Possibly the Least Useful Book I have ever Bought

Online promotional videos and games are about to explode. My job is to work with companies to navigate the pitfalls and avoid legal and technical problems. I was hoping this book would be a useful reference. Instead I found so little information in here, I was embarrassed for Wiley and its editors. I will now be much more skeptical of all their books. Do not buy this book, it is a total waste of money.