Abstract: An electronic trading system (100) for allowing a user (101) to make a plurality of offers (102) to a plurality of advertisers (103, 104), each offer being for an advertised item (105, 106). The system (100) includes a memory device for storing information related to the offers (102). A processor, in the form of an Offer Management System (OMS) (107), is disposed in communication with the memory device, the OMS being configured to: receive from the user the offers (108, 109) for each advertisers' item (105, 106); transmit data (110, 111) indicative of the offers (108, 109) to the related advertisers (103, 104); receive from one of the advertisers (103) data indicative of the acceptance of the offer (112); and retract the remaining offer (109) such that only one of the offers (108, 109) is accepted.