To realize new two-way business service that offers merits to a broadcaster, an advertiser and a viewer each by integrally utilizing the characteristics of each media type such as broadcasting, the Internet and mobile communication.

Broadcast content 22 on commission from an advertiser is transmitted from a broadcasting center 20 through a broadcast channel on digital television broadcasting, and related digital content 36 is stored in a Web server 35. A viewer who watches the broadcast on a television terminal 41 selects one properly from the television terminal, a fixed telephone terminal 42, a portable telephone terminal 43 and an Internet terminal 44 and connects it with a two-way service center 30 to receive two-way service while a customer database 33 is referred to. A data warehouse 34 analyzes data in the customer database to extract relations from among items and report them to the advertiser.