Comcast Corporation (formerly known as American Cable Systems and Comcast Holdings),[note 1] headquartered in Philadelphia, is the largest American multinational telecommunications conglomerate. It is the second-largest broadcasting and cable television company in the world by revenue (behind AT&T), the largest pay-TV company, the largest cable TV company and largest home Internet service provider in the United States, and the nation's third-largest home telephone service provider. It provides...