Tumblr (pronounced "tumbler") is a microblogging and social networking website founded by David Karp in 2007 and currently owned by American company Automattic. The service allows users to post multimedia and other content to a short-form blog. Development of Tumblr began in 2006 during a two-week gap between contracts at David Karp's software consulting company, Davidville.[3][4] Karp had been in