Abstract: The present invention provides an advertisement time-frame transaction system comprising assigning means for selecting a viewer according to information about viewers and allowing an advertiser of an advertisement to assign an advertisement-viewing reward to the advertisement for the selected viewer, designating means for allowing the selected viewer to designate whether he/she will view the advertisement having the assigned advertisement-viewing reward, and hanging means for allowing the advertiser to change the advertisement-viewing reward of the advertisement in real time, depending on the information about the designation to be provided from the designating means when the viewer has designated whether he/she views the advertisement.

Abstract: [Problems] To provide a technique of fusing advertisement through broadcasting with that through a network out of advertisement media, especially a technique of producing a high advertisement effect by automatically synchronizing the advertisement timing and by optimizing the display form. [Means for Solving Problems] A listing advertisement transmitting device connected to a user terminal through a network and adapted for displaying a listing advertisement the setting of the advertisement charge of which is different with the display form of the user terminal is set.