Communication networks and methods and computer program products for performing searches thereon while maintaining user privacy

摘要

A communication network is operated by associating a pseudonym with a user of the communication network at a proxy searcher. A complex search request from the user is received at the proxy searcher, the complex search request being associated with the pseudonym. The complex search request and pseudonym are forwarded from the proxy searcher to a central searcher. The complex search request is divided into a plurality of simple search requests at the central searcher. The plurality of simple search requests are performed on at least one database. The results of the plurality of simple search requests are provided to the proxy searcher, the results being associated with the pseudonym.