Jack Dorsey fashion design. As the service began to grow in popularity, Dorsey chose the improvement of uptime as top priority, even over creating revenue – which, as of 2008, Twitter was not designed to earn. Dorsey described the commercial use of Twitter and its API as two things that could lead to paid features. He describes his three guiding principles, which he says are shared by the company, as simplicity, constraint and craftsmanship. On October 16, 2008, Williams took over the role of CEO, while Dorsey became chairman of the board. On March 28, 2011, Dorsey returned to Twitter as Executive
Artsy (website) Artsy (website) Artsy is a free online platform for collecting and discovering art. Artsy's search engine and database draw connections and map relationships among works of art. Led by Carter Cleveland, computer science graduate from Princeton, and Sebastian Cwilich, former executive of Christie's and Haunch of Venison director, Artsy aims to “expand the art market to support more artists and art in the world." Artsy is backed by a group of investors, including Eric Schmidt, Wendi Murdoch, Dasha Zhukova, Thrive Capital, Jack Dorsey, Bob Pittman, Rich Barton, Jim Breyer, Keith Rabois, David Tisch, Chris Dixon, Peter Thiel, Charlie Cheever, Dave