Provides a systematic guide for evaluation and selection of an online service vendor. Topics briefly considered include the availability of selection aids, cost, online services, system search capabilities, training services, file documentation, and complimentary services. A selective listing of database directories is provided. (Author/JD)

The DIALIB project involved an experiment in providing on-line services in four public libraries. Based on three years of experience, in which services were offered both in a free and fee-based environment, nine requirements for online searching are delineated, and guidelines formulated for public libraries contemplating such services. (Author/JPF)