A microblogging website founded in 2007 by David Karp. Noted for its ease of use, people can create short entries and post them in a matter of minutes. Four years after its inception, Tumblr eclipsed the well-known WordPress blogging site in number of users, and by 2013, more than 100 million Tumblr microblogs were hosted. The name comes from "tumblelog," which was a new term coined in the mid-2000s for a short-form blog. In 2013, Tumblr was acquired by Yahoo. Between Twitter and WordPress Tumblr's huge popularity is due to how it fits into the blogging world. Entries can be much longer than Twitter posts, which are confined to 140 characters, but they tend to be smaller than standard blog entries that are often articles about a subject. A Tumblr entry can also be nothing more than a single image. For more information, visit www.tumblr.com. See microblog, Twitter and WordPress.