Mr. Biz Stone serves as Advisor at Pinterest. Mr. Stone is a Co-Founder of Jelly Industries, where he serves as the Chief Executive Officer. He's also a Co-Founder of Twitter. He serves as Advisor at Obvious Ventures. Mr. Stone serves as a Founding Advisor at Trazzler. He has been a Strategic Advisor at Spark Capital since July 7, 2011. He was a co-founder of Obvious. Previously, he was a co-founder of Xanga. Mr. Stone is a Board Member of R8 Group.