"By using Web 2.0 social bookmarking sites, libraries can more easily manage subject guides and other lists of Web resources. Social bookmarking services such as Delicious provide a one-click method to bookmark a Web site, allowing librarians to describe and categorize Web sites. Using a small amount of JavaScript, these bookmarked resources can be dynamically included into subject guides and other Web-based library resources."
NIfty video explaining how social bookmarking (here, Delicous) works. Uses paper printouts of web pages, not the web pages on a computer, which is a great idea.