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Page last updated at 16:14 GMT, Friday, 19 November 2010

Jimmy Wales on why Wikileaks should be cautious

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Type a question into a search engine and the chances are one of the top results will be from Wikipedia - an online encyclopaedia created and maintained by everyone.

Its founder, Jimmy Wales, acknowledges that having millions of contributors can lead to a few inaccuracies creeping in amongst the facts. But he believes his creation will continue expanding. Already 250 million people use Wikipedia every month.

Spencer Kelly reports.

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