RESUMEN
Since it was opened 18 months ago, the blood donor sampling Center at Orsay has used traditional means of advertising. However, although the results were satisfactory for the first year, they soon levelled off; and it was decided to adopt another approach, in the form a promotion campaign, including posters, brochures, cartoons... The campaign "Vive la Vie" has been limited to the immediate vicinity of Orsay. It was set up in such a way to enable the staff to implement it easily and progressively and thus precisely follow and record the results. The data are reported in this article. The advantages of the system are a two-step appeal which allows more persuasive information to be given; a graduated approach welcoming both the convinced and the more reluctant donors to the Centre; and the compiling of an index by means of the forms returned by the population.