An electronic trading method that, over a data communication network connecting the broadcast center 101, a viewer terminal 111 and an order-receiving center 131 together, in case the viewer views an advertisement of from a broadcast center 101 and places an order of an advertisement product to the order-receiving center, the order-receiving center 131 issues points and notifies the points to at least one of the viewer terminal 111 and the broadcast center 101 whereby the broadcast center 101 discounts a pay-broadcast viewing fee in an amount of the notified points. Due to this, the sponsor can promote sale without causing product price erosion and, moreover, be free from causing useless points. Furthermore, the viewer, getting points without troublesome operations, is allowed to view a pay broadcast free of charge or at a discount rate. The broadcast center can obtain advertisement value improvement and pay-broadcast demand increase.
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