Biz Stone
Christopher Isaac "Biz" Stone (born March 10, 1974) is a co-founder of Twitter, Inc and also helped to create and launch Xanga, Odeo, The Obvious Corporation and Medium. In 2012, Stone co-founded a start-up called Jelly Industries where he serves as CEO. The release of the Jelly app, a Q&A platform that relies on images, was officially announced in January 2014.