Abstract: Apparatus, and a corresponding method, for arranging presentation of advertising, sales, promotional, and educational campaigns to selected user of computer interfaces in one or more locations, that meet demographic requirements of campaign. Apparatus collects Information about campaign, capacity of various locations, characteristics of locations, and characteristics of users of those locations. Apparatus uses information to negotiate cost of campaign; to conclude a contract for campaign; to schedule, distribute, present, and measure campaign; and to report result of campaign to involved parties.