The information needs of journal users are normally complex. They need specific, discipline-oriented information and also more general, mission-oriented information. The journals are expected to provide items required for current awareness as well as data of an archival nature. As a consequence, decisions concerning the subject coverage, formats, and packaging of journals are also complex, particularly in view of the impact of these decisions on the economics of journal publication. The factors involved are presented and their effect upon the future of primary journals is considered.