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Social bookmarking
Social bookmarking is a mechanism based on grading (e.g. through a ‘like’ mechanism or by using a classification system of stars or tagging) content items available on a network by large groups of Internet users. Thanks to labeling the most valuable (or interesting for a given user category) content, other Internet users can access the resources they are looking for more effectively. Social bookmarking is very important in the self-improvement of one’s skills based on open content mechanisms.