Jack Dorsey is a web developer and businessman from the United States who was born on November 19, 1976, in St. Louis, Missouri. He cofounded Twitter in 2006 along with Evan Williams and Christopher Stone. The taxicab businesses used the taxi dispatching software that Dorsey developed as a youngster. Before relocating to San Francisco in 1999, he attended New York University. There, he founded a business that used the Internet to manage the...