StumbleUpon, a free plug-in for the Mozilla Firefox browser, enables users to search the Web in a fresh way. This system filters resources on the Web to meet the personalized interests of particular users.
This tool is a recommender system that combines a self-defined user profile of preferences, the recommendations of friends in a user’s social network (as expressed through Facebook connections), and similar users’ preferences.
StumbleUpon then combines high-end search capabilities, social networking, swarm intelligence and crowd sourcing, and popularity ratings — to filter websites to enhance targeted discovery (vs. more serendipitous Web search engine approaches).
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