Instruct: Classify Amazon reviews into positive or negative sentiment
Query: practically useless but huge

I have a huge classical CD collection and hoped this would help in my decision making for new purchases. The book is huge, and useless. Such a weird bias in the reviews, EXTREMELY shallow reviews at that and even the 2004 issue is badly out of date. The print is so small it is hardly legible. I guess the solution is an online source that can be deeper, wider and up to date. I'll use it for a door-stop, so it's not an entire loss.