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Title: Excellent Book
Review: I first heard of the book in an article by Perry Marshall. Using 80/20 analysis on some recently released SE data has given me new insight into what people are looking for on the Internet, and has dramatically increased the effectiveness of my advertising. And that's only the tip of the iceburg ... assuming 80% of what we do in life is largely irrelevent to happiness, and creating techniques to focus on the important 20% is an eye-opening experience.
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