In 2000, a measurement studyof the Gnutella file-sharing network [Adar and Huberman, 2000] found that approximately 70% of peers provide no files and that the top 1% of the peers provide approximately 37% of the total files shared. Similar patterns have been observed in subsequent studies of Napster and Gnutella networks [Saroiu et al., 2002]. In 2005, [Hughes et al., 2005] found free-riders have increased to 85% of all Gnutella users.
My recent collaboration with a CS friend of mine has directed my interests towards issues concerning free riding behavior in P2P systems. One of my on going work is to design a file sharing system where incentives for file sharing can be realistically created.
Sorry for sounding boring, but thats the kind of work I do.
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