Advertising and promotion of products and services have come a very long way since the ?sandwich man? and the streetcorner hustler. It has taken off, literally, and is now largely dependent on the various media-radio and press to satellite and cable television, sponsored events and national and international tie-ups with sporting and cultural events and shows. The focus has become clear and distinct: advertise and promote-or perish. Sensibly advertised is half sold, seems to be the maxim.