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摘要

A method and PROGRAM and system to provide incentives for client machines to contribute resources to a peer-to-peer computer network are provided. When a server receives requests for information from a plurality of client machines and it determines if the client machines are contributing resources to peer-to-peer sharing. When answering requests and clients which contribute resources to peer-to-peer sharing are given priority over client which do not contribute. In another embodiment of the present invention, a further incentive is provided to clients which contribute to peer-to-peer sharing and by giving higher priority to client requests in proportion to the level of resources contributed.