A few libraries are trying out social tagging: the University of Pennsylvania (UP) was one of the first library adopters with its PennTags (tags.library.upenn.edu/). The site allows UP students, faculty, and staff to bookmark quality Web sites and records in UP’s online catalog and share these resources with others. Additionally UP users can create and share “projects” or groups of links on a single site named for the topic.
PennTags is a site dedicated to academic tagging, but this technology can also be incorporated into an existing library Web presence. Stanford University is also experimenting with social tagging, in order to educate patrons about the library’s resources and to provide a platform for curators to identify quality external Web sites. Instead of a standalone tagging site, the open source content management software Drupal (
drupal.org/) forms the base for Stanford’s Information Center site, which also includes wiki and blog modules. From there, the designers have added a del.icio.us module that allows users to find tags organized by subject.