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
Glenn Dorsey he started all 16 games and had 69 tackles and two sacks. In 2011, Dorsey had 62 tackles, but no sacks. On March 13, 2013, Dorsey signed a two-year deal with the San Francisco 49ers. Dorsey was expected to be a reserve, but following the injury to starting nose tackle Ian Williams in week two, Dorsey took over the starting job. Dorsey signed a two-year extension with San Francisco on August 19, 2014. On November 25, 2015, Dorsey was placed on injured reserve with a torn ACL, ending his season. He promoted animal protection with PETA. Glenn Dorsey Glenn Jamon