This examination of the use of computer-mediated communication (CMC) systems by individuals for the purpose of broadcasting messages to large numbers of recipients begins by contrasting CMC broadcasting with traditional conceptions of interpersonal and mass communications. Several alternative theoretical perspectives are then examined, and a set of propositions are derived regarding potential uses and effects of CMC broadcasting in an organizational setting. Also described is a preliminary empirical test of several propositions which is based on a survey of electronic mail users in one large organization. Finally, a highly speculative look is taken at potential policy issues suggested by the conceptual and empirical analyses as they relate to both businesses and home consumers. The text is supplemented by four tables and 53 references are provided. (EW)