The present invention provides for a method for ordering an advertising spot for an advertisement over a data network to be transmitted to a target user during a transmission of a motion picture. An advertiser first provides to a broadcaster a predetermined constraint that defines the target user for receiving the advertisement. Then, the broadcaster uses the predetermined constraint to determine a price for the advertising spot. The price is then offered by the broadcaster to the advertiser and the advertiser then orders the advertising spot based on the price to place the advertisement in the advertising spot to be transmitted to the target user during the transmission of a motion picture.