The Advertising Services Survey - 1999 carries on the work began by INE, in 1998, with the Pilot Survey of Advertising Services ¿ 1997. This survey is part of a development program of the Services to Companies statistics, under which it was equally carried out the Pilot Survey of Computer and Related Activities - 1998, aimed at enlarging the statistical coverage of the Services sector. It meets the recommendations of the Statistics Task Force of the High Council of Statistics - Trade and Services and also users needs.