Every news article on the central University of Bath website now includes links to a range of social bookmarking/sharing websites.
Social bookmarking is a way for Internet users to store, organize, share and search bookmarks of web pages.
In a social bookmarking system, users save links to web pages that they want to remember and/or share - bucswebdev:social bookmarking@wikipedia
This video shows how social bookmarking works:
The BBC also has more information