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
Biz Markie Before You Go-Go" by Wham!, "It Takes Two" by Rob Base and DJ E-Z Rock, "The Breaks" by Kurtis Blow and "Robot Rock" by Daft Punk. In December 2009, Biz Markie appeared in a RadioShack commercial, repeating the line: "Oh Snap! Guess what I saw!" from his song "Just A Friend". That same year saw his debut with Andy Milonakis in television commercials for the commercial Internet service Tune Up. In 2010, Biz Markie appeared on VH1's "100 Greatest Artists of All Time", providing commentary throughout the series. Biz Markie himself was not included on the list. On November 9,