Social bookmarking is a method for web users to store, organize, search, and manage bookmarks of web pages on the Internet with the help of tags or keywords on sites such as Digg or Del.icio.us. This helps you in accessing bookmarks from any computer with online access. These bookmarks can either be public or private. If public, your favorite bookmarks visible for others to view and follow as well, hence the social networking aspect.
Social bookmarking has become a great tool in building web presence and promoting a business on the Internet. In addition, if you place your links wisely and know which social bookmarking sites offer dofollow links, this strategy will also help your search engine optimization (SEO) efforts.