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
Tommy Dorsey India", "Marie", "On Treasure Island", and his biggest hit single, "I'll Never Smile Again". Born in Mahanoy Plane, Pennsylvania, Thomas Francis Dorsey Jr. was the second of four children born to Thomas Francis Dorsey Sr., a bandleader, and Theresa (née Langton) Dorsey. He and Jimmy, his older brother by slightly less than two years, would become famous as the Dorsey Brothers. The two younger siblings were Mary and Edward, who died young. Tommy Dorsey studied the trumpet with his father but later switched to trombone. At age 15, Jimmy recommended Tommy to replace Russ Morgan in The Scranton Sirens, a