Social bookmarking sites are online platforms that allow users to save, organize, and share web pages, articles, blog posts, videos, and other online content. These sites serve as a virtual collection of bookmarks, providing a convenient way for individuals to keep track of their favorite websites and discover new ones. Users can categorize their bookmarks using tags, making it easier to search and retrieve specific content later. Additionally, social bookmarking sites enable users to share their bookmarks with others, expanding the reach of valuable resources and facilitating collaborative information sharing. These platforms often have a social aspect, where users can follow other users, explore their bookmarks, and engage in discussions. Popular social bookmarking sites include Delicious, Pocket, Diigo, and Pinterest.