Tumblr's CEO on Blogging, Online AnonymityDavid Karp hardly has the conventional profile of a CEO. He dropped out of high school at the age of 15, heading to Tokyo to work for UrbanBaby, an online parenting site, then moved back to his native New York to launch Tumblr in 2007, when he was just 20 years old. Tumblr is a Web platform that is intended to make blogging easier, allowing users to post content in a wide range of formats. It's no
