One of the more recent computer applications in agricultural economics is the information delivery system. These systems are more than just another new "computer program" or "computer model." They are specially designed for computerized information delivery and analysis. The emergence of computerized information systems is having a profound impact on the conventional roles of extension and research economists. Traditional relationships between extension, research, and clientele groups are being altered. The way in which these relationships change is directly related to the type system developed and the implementation methodology utilized. In this regard, the profession is confronted by two important sets of issues: (a) the development and implementation of information systems, and (b) the interface between extension, research, and clientele groups.