microblogging platform and social networking website

Tumblr is a blogging site that began in New York City in 2007 by founders David Karp and Marco Arment. The site allows users to post text, images, videos, links, quotes and audio to a short-form blog, called a tumbleblog. Users can follow other users, or choose to make their tumblelog private. Tumblr emphasizes ease of use. The site has roughly 91.7 million posts a day[1] and gains about 15,000 new users on a day on average.[2] In 2013, Yahoo bought Tumblr for $1.1 billion.[3] After the sale to Yahoo, David Karp remained as CEO.

Tumblr, Inc.
Industrysocial network service, micro-blogging
Number of employees

It is the 25th most popular website in the world.[4]

Famous people with Tumblr accounts include President Obama, Beyoncé,[5] and Lady Gaga.[6]


  1. "Press Information - Tumblr". www.tumblr.com.
  2. Boutin, Paul (2009-03-13). "Tumblr Makes Blogging Blissfully Easy". The New York Times. Retrieved 2009-03-26.
  3. Padmanabhan, Geeta (4 September 2013). "Yahoo buys a brimming Tumblr" – via www.thehindu.com.
  4. "Tumblr.com Traffic, Demographics and Competitors - Alexa". www.alexa.com.
  5. "Beyoncé - I Am". iam.beyonce.com.
  6. Evans, Meredith (2013-07-25). "Lady Gaga". Oxford Music Online. Oxford University Press.

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