For some years, the Information center of the Island of Youth has been working in the benefit of special services of information directed to some prioritized categories of users. The selective dissemination of the information is one of them. This service destines heads of groups, specialists of II degree, professionals who work in subjects of candidacy and others, to also start off not only of the requirements of the work that carry out, but of the paper that the group heads must carry out like diffusers of the information between their subordinates. Nevertheless, the revision of this aspect threw that such function was not being fulfilled exactly.