Peer-to-peer (P2P) services allow users to share networked resources, notably bandwidth
and content, from the edges of the network. These services have been popularized
because of file sharing — particularly the sharing of unlicensed copyrighted files. Concerns
about such P2P file sharing were highlighted by content owners’ recent lawsuits
against individual users and P2P network operators.
However, content owners are increasingly exploring the ability of peer-to-peer networks
to accommodate legitimate content distribution and promotion. In this article we
review the economic characteristics of P2P networks and outline the implications of these
characteristics on efforts to counteract illegal piracy and on potential uses of P2P networks
in a commercial media distribution strategy.