Christopher ‘Biz’ Stone is a tech entrepreneur who co-founded Twitter. After selling the business he went on to start an innovative social search engine and a blogging platform, and became an angel investor before returning to the company he started to guide its culture. He is the author of Things A Little Bird Told Me - Confessions of a Creative Mind, a sometimes humorous business memoir, and was named as one of TIME magazine's 100 Most Influential People in the World.