Sampling poses an interesting problem in markets with experience goods. On the one hand, free samples reveal product quality and help consumers to make informed purchase decisions (promotional effect). On the other hand, sampling may induce consumers to substitute purchases with free consumption...

This paper quantifies the relationship between private-network file sharing activity and music sales in the BitTorrent era. Using a panel dataset of 2,251 albums' U.S. sales and file sharing downloads on a private network during 2008, I estimate the effect of file sharing on album sales....