Social bookmarking, is a user-defined taxonomy system for bookmarks. Such a taxonomy is sometimes called a folksonomy. Web sites dedicated to tagging, such as del.icio.us and Flickr, provide users with a place to store, label, annotate and share favorite Web pages and files. There are several ways that you can use most tagging sites.

Social bookmarking sites allow you to store, and share links across the internet, meaning that if you see a page on RFU.com that you want to share with other people, or save for future reference you can click on one of these links to add it to your list.