This SPEC (Systems and Procedures Exchange Center) Kit and Flyer reports results of two surveys conducted in 1996 and 1998 that examined ARL (Association of Research Libraries) member libraries' World Wide Web history, development, use, and activities. Fifty-six out of the then 119 ARL member institutions responded to the 1996 survey, and 68 out of 121 returned the 1998 survey. Results are briefly summarized in the following areas: (1) Web site development, including guidelines for design, software used, and links; (2) Web site management, including Web administrators, Web servers, frequency of updating home pages, and Y2K (year 2000) compliance; and (3) issues and trends, including three phases of Web site development among ARL libraries and recommended components of a library home page. Copies of both questionnaires with responses are included. Representative documents include Web development guidelines and policies from the University of Alberta, University of California-Davis, University of Iowa, Laval University (Quebec), Library of Congress, Massachusetts Institute of Technology, University of Oregon, University of Pennsylvania, Virginia Tech, and University of Washington, as well as home pages from 23 libraries. A list of 11 selected books and journal articles is included. (MES)