The Amsterdam University Press has released Sharing: Culture and the Economy in the Internet Age.
Here's an excerpt:
This book is about file sharing for creative, expressive or informative works in all media. More specifically, it is about file sharing between individuals and without profit motive. File sharing is the act of making a file available to other individuals by putting it on-line, by sending a copy, or by rendering it accessible through a file sharing software. We defend the view that sharing without direct or indirect monetary transaction—or "non-market" sharing—is legitimate. We also claim that sharing is socially and culturally valuable and will play a key role in the future of our culture and the creative economies. Furthermore, this book proposes a means to strengthen and exploit the synergy between file sharing and creativity, for the general benefit of society and the enrichment of the cultural economy.