Tumblr is a free blogging platform popular with people between the ages of 18 and 35 years. The platform hosts more than 200 million blogs, featuring 83.1 billion posts. Tumblr is among the most-visited sites on the Internet and supports users in 13 different languages. The average user spends 16 minutes on Tumblr when logged on and 1.5 hours per month. A small majority of users are women. Tumblr has a brief history and unique features and faces future challenges to its profitability.


The New York City visionary David Karp created Tumblr in February 2007. Karp grew up in New York and dropped out of Bronx High School of Science at 15 years of age. While continuing his education at home, Karp was working with ...

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