Can you see the potential of this tool for research assistance? Or just as an easy way to create bookmarks that can be accessed from anywhere? How can your library or media center take advantage of tagging and del.icio.us? Look at the sites in the Resource list above to see how libraries are using Del.icio.us.
I can see the potential for this tool in research. If for instance, at the reference desk's PC as the reference librarians are working with patrons or just working on research they tag interesting sites an incredible source of information could be compiled and it would be easy to access.