Jack Dorsey Chairman after Dick Costolo replaced Williams as the CEO. On June 10, 2015, Costolo announced that he was resigning as CEO of Twitter, effective July 1, 2015. Dorsey would assume the post of Interim CEO upon Costolo's departure. He was named permanent CEO of Twitter on October 5, 2015. On the day after the controversy about Twitter's new algorithms for tweets, Dorsey responded to the trend, saying it was only a hoax. In May 2016, Dorsey announced that Twitter would not count photos and links in the 140-character limit to free up more space for text. This move was an
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