Tumblr's Karp: How Marissa Mayer Sold Me on Yahoo

May 30 (Bloomberg) -- David Karp, the 26-year-old co-founder and CEO of Tumblr, started the site in 2007, at the age of 20; six years later it's the internet's preeminent blogging platform with over 300 million active users. On May 20th, Yahoo! announced that it would purchase Tumblr for $1.1 billion. Karp talks about the discussions with Yahoo CEO Marissa Mayer that lead up to the sale. TONIGHT on Charlie Rose @ 8p & 10p ET. (Source: Bloomberg)

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