Describes a study conducted at Purdue University Library to determine not only the costs of providing online information services to users, but the value of time saved by the end user in having a computer search run and user satisfaction with the results. Six references are listed. (RBF)

Uses the example of bibliographic retrieval services to explore the potential impacts of historic usage trends, technological advances, actions/policies intended to enhance or control evolving services, and other social, economic, and political developments on areas of concern to users of online systems. Eight figures and 23 sources are included.…