A process for selling or auctioning digital advertising includes the steps of assembling ad placement criteria into discrete advertising packages that are of unique benefit to advertisers. Setting prices for advertising packages that will be viewable online. Enabling an electronic bidding process which concludes in a winner. A selection of advertising package criteria will be customizable by the advertiser, customizing select advertising package criteria to result in an automated modification of its price, selling advertising packages at a reasonable time before the Message is to be published, allowing advertisers a specified amount of time to submit their message for approval, entering the message into a web interface, to allow the advertiser to choose desired Line Dwell-Time and Transitions between Lines, electronically notifying once an advertiser's message has been approved. The digital advertising may be published on a shopping cart based device, retail based device, or food tray based device