Social bookmarking allows users to store and share bookmarks online rather than locally on their computer. Users can tag bookmarks with keywords to describe them. Popular social bookmarking sites like Delicious, Diigo, and Magnolia allow users to access their bookmarks from any computer, discover bookmarks others have shared, and quickly search bookmarks by tag. Tags are used to categorize and describe bookmarks, and sites may display tags in a weighted "tag cloud".

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