This paper investigates the impact of unauthorized downloading of MP3 files on the recording industry. Although the no longer extant Napster was the most famous system used for such downloading, its progeny have continued to allow millions of music listeners to download music (and other) files...

Researchers have frequently used publicly available data on product ranks to estimate nonpublic sales quantities under the assumption that the distribution of sales follows a power law. Using population sales data for a product frequently thought to follow a power law—books—we find the...

This paper investigates the impact of peer-to-peer networks that promote the unauthorized downloading of MP3 files exert on the recording industry. Although Napster was the most famous of these systems, its progeny have continued to allow millions of music listeners to download music (and other)...