Twitter, Inc. (Twitter) is a global platform for public self-expression and conversation in real time. Twitter is a real-time platform, where any user can create a Tweet and any user can follow other users. Each Tweet is limited to 140 characters of text, but can also contain rich media, including photos, videos and applications. The Company offers Twitter apps for phones, tablets and computers. The Company generates its advertising revenue primarily from the sale of its three Promoted Products: Promoted Tweets, Promoted Accounts and Promoted Trends. Twitter has more than 230 million monthly active users (MAUs) and more than 100 million daily active users, spanning nearly every country. Its users create approximately 500 million Tweets every day. Its users include government officials, celebrities, athletes, journalists, sports teams, media outlets and brands. On October 28, 2013, the Company completed the acquisition of privately held MoPub, a mobile-focused advertising exchange.