Investment books often ripped off

So what type of books get illegally downloaded most often?

The study [by Attributor] examined 14 categories to capture a representative sample of the industry, including business and investing, health, mind and body, fiction and reference. Business and investing titles suffered the highest number of illegal downloads, averaging 13,000 copies per title, with a potential loss of more than $1 million on each title,

Just imagine the illegal downloading market for something like "How to set up a successful Ponzi scheme" or "Embezzlement for Dummies".