1. An information mediating system provided with a plurality of terminals which have both information sending and receiving functions, or either an information sending or a receiving function through a network, and provided with an information mediator which has an information mediating function to mediate a received information through said network, said information mediating function, comprising: a grouping function to select an information provider and an information beneficiary out of said plurality of terminals according to an objective specification to specify a specific information to be obtained; and a data transmission function to transmit said specific information obtained from said selected information provider, which fulfills said objective specification, to said selected information beneficiary through said network.