LED electronic boards are the advertising tool with the best price/performances rate. Once purchased they function 24 hours a day, 7 days a week, for several years. The usage of other promotional media require the payment of a monthly fee, without obtaining the property and without the certainty to reach the target audience. From the entrepreneur point of view, a variable message electronic sign shouldn't be considered as a cost but as an investment. Considering the return on invested capital, the luminous signs are not expensive at all. A well positioned bright sign pays for itself several times.