Abstract: A system, including an apparatus and method, for facilitating the sale, reservation, purchase, management, and creation of electronic advertisements. The system enables site owners of digital signs to establish and maintain seasons of operation for their signs having rates and promotions which may differ for each day and hour of the seasons, and to control use of their digital signs by advertisers for the presentation of advertisements by an approval process for advertisers and reservations. Advertisers are assisted in forming and managing advertising campaigns having reservations for the presentation of electronic advertisements at different sites, on different days, at different times, and for different advertisements that may be created by the system using an ad builder process or that may already exist and be uploaded to or referenced by the system.