Social Bookmarking and it's compititive advantages

Although the concept of shared online bookmarks dates back to 1996, the term social bookmarking is a relatively new and was first used in 2003 by Delicious web service. The term 'tagging' is also associated with social bookmarking. Using social bookmarking, users can search, save, manage, and organize web pages/websites for sharing or for remembering. With the rising number and growing popularity