Christopher Isaac "Biz" Stone is an American entrepreneur who is a co-founder of Twitter, among other technology companies. Stone was the creative director at Xanga from 1999 to 2001. Stone co-founded Jelly, with Ben Finkel. Jelly was launched in 2014 and was a search engine driven by visual imagery and discovery. Stone was Jelly's CEO until its acquisition by Pinterest in 2017.

Pinterest is an American image sharing and social media service designed to enable saving and discovery of information like recipes, home, style, motivation, and inspiration on the internet using images and, on a smaller scale, animated GIFs and videos, in the form of pinboards. Created by Ben Silbermann, Paul Sciarra, and Evan Sharp, Pinterest, Inc. is headquartered in San Francisco.