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
Jack Dorsey hundred employees by June 2011. Square's office is located on Market Street in San Francisco. In September 2012, "Business Insider" magazine valued Square Inc. at US$3.2 billion. Dorsey is CEO of Square, Inc. On October 14, 2015, Square filed for an IPO to be listed on the New York Stock Exchange. As of that date, Dorsey owned 24.4% of the company. Producer Tom Anderson and correspondent Lara Logan interviewed Dorsey for a segment of CBS "60 Minutes" called "The Innovator: Jack Dorsey" which aired during March 2013. In 2013, talking to CNN, Dorsey expressed admiration for Michael Bloomberg and his