Dispositif allowing the information and the communication of messages by means of graphic grids. Il includes/understands one, two or several other entries, known as of research and an exit, known as of information, comprising or not distinctive signs of references for identification of the advertisers which they are commercial or particular and which can ensure the required service. L' invention can be used in all the cases where information gathers a quantity of messages or advertisements, it is the case in particular markets of the car of occasion, real estate and job offers, this list not being by no means exhaustive.