An extensive analysis of user traffic on Gnutella shows a significant amount of free riding in the system. By sampling messages on the Gnutella network over a 24-hour period, we established that 70% of Gnutella users share no files, and 90% of the users answer no queries. Furthermore, we found out that free riding is distributed evenly between domains, so that no one group contributes significantly more than others, and that peers that volunteer to share files are not necessarily those who have desirable ones. We argue that free riding leads to degradation of the system performance and adds vulnerability to the system. If this trend continues copyright issues might become moot compared to the possible collapse of such systems. 2
Adar and Huberman studied the Gnutella traffic for a 24-hour period REF , and found that close to 70% of the users shared no files, and that 50% of all responses were returned by only 1% of the hosts.
Free Riding on Gnutella
First Monday
Computer Science