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TIL That nobody really knows how to correctly play Beethoven's famous "Für Elise" - original notes were never found and were published years after Beethoven's death by Ludwig Nohl. Pianists are still arguing how to play this piece.

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D1eyg TIL free services like Craigslist have decimated the classified advertising departments of newspapers, some of which depended on classifieds for 70% of their ad revenue. Research has shown that Craigslist cost the newspaper industry $5.4 billion from 2000-2007.
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