Instruct: Classify Amazon reviews into positive or negative sentiment
Query: By far the best treatment of DRM I've ever run across

DRM is a confusing topic, and this one of the clearest expositions of DRM (or most any other technical topic!) that I've ever run across. It demystifies a complex subject with simple straightforward language, describes key vendors and organizes them accurately into categories, and even contains a wealth of useful materials such as checklists to help the customer determine business/technical requirements, evaluate vendors, etc.A must-have for any publisher, intellectual property lawyer, venture capitalist, technology vendor, or consulting firm dealing with digital content distribution or online intellectual property.