"Peer-to-peer systems have existed since the first incarnation of the Internet. In recent times the Internet has taken on a more hierarchical form, power has been taken away from the individual and placed in the hands of operators of large servers. However, with the re-emergence of p2p the individual is gaining more freedom.
Read more »Peer-to-peer searching and sharing of electronic documents -- Paul Stacey (october 2004)
http://arrow.dit.ie –