Jack Dorsey fashion design. As the service began to grow in popularity, Dorsey chose the improvement of uptime as top priority, even over creating revenue – which, as of 2008, Twitter was not designed to earn. Dorsey described the commercial use of Twitter and its API as two things that could lead to paid features. He describes his three guiding principles, which he says are shared by the company, as simplicity, constraint and craftsmanship. On October 16, 2008, Williams took over the role of CEO, while Dorsey became chairman of the board. On March 28, 2011, Dorsey returned to Twitter as Executive
Jelly (app) launching a native mobile app called Jelly. On April 1, 2013, Biz Stone wrote the company's first blog post, giving only very vague information about the product. A "TechCrunch" writer inferred that the product would be targeted at do-gooders on the go. Other news publications also published speculation about the app. In May 2013, while still in stealth mode, Jelly raised Series A funding from Spark Capital, SV Angel, Square CEO Jack Dorsey, Reid Hoffman, Al Gore, Bono, and others. The app release was announced, thereby bringing Jelly out of stealth mode, on January 7, 2014. The announcement was picked