The problem with torrents is that they are clumsy, particularly for small files like PDFs. EMule had a better overall User Experience with the Kademilla network than Bittorrent. We need a new generation of P2P applications and protocols that a) Are easy to use for the purpose of searching for single files with specific metadata (author name, keywords, text/abstract content,e tc). and b) There is an "incentive" to share content in addition to pure altruism. As with Bittorrent, Kademilla or other P2P we have seen that content availability decays.