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a very good introduction to wikipedia - useful for students prior to using it for research

Search a wide variety of social media all in one spot. "Mashpedia presents an organized mashup of results from Wikipedia, YouTube, Twitter, Flickr, Google News, Books, Blog Posts, and further contextual information, thus providing a quick, practical outlook for every topic. "

This would be a great addition to the school library page for any classes - middle years and up that do current events.