Founded in March 2006 by Jack Dorsey, Noah Glass, Biz Stone, and Evan Williams and launched in July of that year, Twitter Inc. is an American online news and social networking service on which users post and interact with messages known as "tweets". Twitter is a platform for what’s happening in the world and what people are talking about right now. Twitter service rapidly gained worldwide popularity. In 2018, more than 300 million active accounts posted 550 million tweets a day. Since 2015, and continuing into 2016 and future years, Twitter has also been the home of debates, and news covering Politics of the United States, especially during the 2016 U.S. presidential election.