The University of Washington Libraries offers a monthly computerized retrieval of medical literature (MEDLINE) based on a profile of interest supplied by the user. To evaluate user response to the service 136 questionnaires were sent out; 119 were returned. Among the major findings of the survey were: SDILINE is of major value in alerting users to new articles in their field; SDILINE printout is closely scanned by most requestors; the time lag in SDILINE citations does not bother requestors; and most requestors felt that SDILINE complemented other similar services, such as "Current Contents." (JY)