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
Terrorism and social media to Prevent Terrorism and Preserve Innovation." At the hearing, members heard testimony from William McCants, an analyst for the Center for Naval Analyses, Aaron Weisburd, director of the Society for Internet Research, Brian Jenkins, senior advisor for the Rand Corporation and Evan Kohlmann, senior partner from Flashpoint Global Partners. McCants stated that while terror groups were actively using social media platforms to further their goals, research did not support the notion that the social media strategies they adopted were proving effective: We are talking about a relatively small number of people. Because the number of people is so small, it