Tumblr is a microblogging platform and social networking website, owned and operated by Tumblr, Inc. The service allows users to post multimedia and other content to a short-form blog. Users can follow other users’ blogs, as well as make their blogs private. Much of the website’s features are accessed from the “dashboard” interface, where the option to post content and posts of followed blogs appear.
As of October 13, 2012, Tumblr has over 77 million blogs. According to comScore, it scored 13.4 million unique visitors in the United States alone in July 2011—up 218% from July 2010. Its headquarters is located in Midtown Manhattan, New York City.
As of August 20, 2012, Tumblr has over 69.4 million blogs and more than 29.8 billion total posts. As of September 2011, the website receives more than 13 billion views per month. As of July 2010, the site receives 25,000 new users each day and as of July 2012, 71.6 million posts are created on the site each day. An analysis by AddThis of shares through their service in 2011 noted that Tumblr sharing had increased by 1299.5%.
The service is most popular with the teen and college-aged user segments with half of Tumblr’s visitor base being under the age of 25. As of 2009, Tumblr had an 85% retention rate, compared with 40% for Twitter.Miłosz Szarek @ Tumblr