1. An information service comprising: a network comprising at least one computer server, material on the network provided by an entity, a request for information means, for submission of a request for information by a submitter to the entity, the request for information means being provided by the network or being linked to the network, the request for information means being computer based, means by which the entity passes the request for information to an information provider, means for the information provider to provide an inducement selected by the information provider to the submitter, to likely submitters, and to selected subgroup or subgroups of likely submitters to submit the request for information, and means for the entity to receive submitted requests for information.