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.

X, commonly referred to by its former name Twitter, is a social media website based in the United States. With over 500 million users, it is one of the world's largest social networks and the fifth-most visited website in the world. Users can share text messages, images, and videos through posts. X also includes direct messaging, video and audio calling, bookmarks, lists and communities, and Spaces, a social audio feature. Users can vote on context added by approved users using the Community Notes feature.