The Market Function of Piracy
By Jerry Kirkpatrick
"One study found that users of pirated software sufficiently influenced — by word-of-mouth communication — eighty percent of the software's prospects to buy the legal product and another described several scenarios in which piracy can help increase the sales of legal products. The pirated product functions as a free sample that the innovator does not have to fund."
Full story http://mises.org/story/2590