Jack Dorsey days, Dorsey worked occasionally as a fashion model. By age fourteen, Dorsey had become interested in dispatch routing. Some of the open-source software he created in the area of dispatch logistics is still used by many taxi cab companies. Dorsey attended the University of Missouri–Rolla for two-plus years (1995–1997) before transferring to New York University, but he dropped out in 1999, one semester short of graduating. He first came up with the idea that he developed as Twitter while studying at New York University. While working on dispatching as a programmer, Dorsey moved to California. In 2000, Dorsey started his
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,