CNN CNN Newsroom August 3, 2013 17:53:00
Jake tapper explains. >> reporter: she was once regarded as the midas of media known as just one name: oprah. for two decades, if oprah winfrey touched your product, you could see gold. after she put ann na karenna on her book club, sales soared 250%. after she put something on her favorites list, it went from 3 million sales to 5 million. the endorsement of then senator barack obama pushed by oprah produced 1,559,000 additional votes for him. >> i love this show. this show has been my life. >> reporter: so when oprah bid this tearful goodbye to her 42
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