Free Riding on Gnutella

@article{Adar2000FreeRO,
  title={Free Riding on Gnutella},
  author={Eytan Adar and Bernardo A. Huberman},
  journal={First Monday},
  year={2000},
  volume={5}
}
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 almost 70% of Gnutella users share no files, and nearly 50% of all responses are returned by the top 1% of sharing hosts. 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… 

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NAT hosts shared no files 68.7% of the time, and ten or less files 74.5% of the time. The top 1% of NAT hosts shared 37

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