Hendrik Boeing
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Digg
Digg is a user driven social content website
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plista
plista provides a recommendation and personalization platform based on collaborative filtering and social graph applications that allows to connect content, products, people and preferences to the benefit of publishers, users and marketers through the int
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sevenload
sevenload is a leading global Social Media Network for WebTV, videos and photos. The sevenload community enables users to explore an extensive entertainment package filled with free premium TV content, music videos as well as interactive Web TV shows
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tripwolf
tripwolf is a social travel guide for the discerning traveler that combines professional editorial travel content with user generated content.
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Twitter
Twitter is a service for friends, family, and co–workers to communicate and stay connected through the exchange of quick, frequent answers to one simple question: What are you doing?