Social Bookmarking 101 provides an overview of social bookmarking (SBM). SBM allows internet users to organize and manage bookmarks online so they are accessible from anywhere. This evolved as a solution because bookmarks were previously only stored locally on browsers, making them difficult to manage and share. SBM tools help users automatically submit bookmarks to over 200 SBM sites and track backlinks from these sites. The future of SBM is uncertain as search engines are increasingly accessing trends on social media directly rather than relying on SBM sites.