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 of "The Andy Milonakis Show". Biz Markie was a cast member on Nick Cannon's "Wild 'n Out", seasons 1 and 3. Biz also does the beatboxing segment, "Biz's Beat of the Day" on the Nick Jr. show "Yo Gabba Gabba!". Biz Markie began 2008 opening for Chris Rock's "No Apologies" tour. Biz Markie's act includes spinning records ranging from old school hip hop to Lynyrd Skynyrd and then performing "Just a Friend". Biz Markie's playlist includes the following: "Children's Story" by Slick Rick, "Rapper's Delight" by The Sugarhill Gang, "Billie Jean" by Michael Jackson, "Holiday" by Madonna, "Wake Me Up