User contribution in peer-to-peer communities

Online Networks as Societies: User Behaviors and Contribution Incentives

Online networks like email, Facebook, LinkedIn, Wikipedia, eBay, and BitTorrent-like Peer-to-Peer (P2P) systems have become popular and powerful infrastructures for communication. They involve potentially large numbers of humans with their collective inputs and decisions, and they often rely on the cooperation and the contribution of their users...

Sharing Incentives for Lazy Free-Riders in BitTorrent and the BarterCast Reputation System

A well-known problem in peer-to-peer networks is free-riding, where users do not share resources in return for what they consume. Free-riders can be distinguished in two categories: diehard free-riders that are willing to subvert the network’s protocol in order to free-ride, and lazy free-riders that are reluctant to share but do follow the...