Social bookmarking is a method for people to store, organize, search, and manage bookmarks of Web pages on the Internet.
A tag is a keyword or term assigned to a piece of information (such as an Internet bookmark, digital image, or computer file). Tag helps describe an item and allows it to be found again by browsing or searching. Tags are chosen informally and personally by the item's creator or by its viewer, depending on the system.
Tagging is an important feature of many Web 2.0 services. For example, Del.icio.us site allows users to add tags to their bookmarks as a way to help find them later.
In the age of social research, bookmarking your sources and sharing content has become an increasingly popular way to locate, classify, rank and share Internet resources.
How do you know if you really need social bookmarking? - Open your browser and look at your bookmarks. Is that list getting out of hand? Have you started wondering about ways to organize, share and access these links from anywhere and not just that one browser on your work computer? - Think social bookmarking if that is you.
With sites like Del.icio.us, you can save your favorite Web sites and send them to your friends. You can also look at what other people have found interesting enough to tag. Most social bookmarking sites allow you to browse through the items based on most popular, recently added, or belonging to a certain category like shopping, technology, politics, blogging, news, sports, etc.
Is social news the same as social bookmarking?
Web sites like Digg, Reddit and Propeller are different because they focus on specific articles and blog related posts rather than any Web sites you chose to bookmark. The social news sites are great for news-related items such as politics, sports, technology, etc.