The Associated Press reports that as a price war shakes out among phone companies, middle-and working-class families adopted broadband internet service in record numbers over the past year. From March 2005 to March 2006, broadband numbers increased 59 percent in United States households earning between $30,000 and $50,000 according to a study to be released by the Pew Internet and American Life Project. In addition, broadband increased 40 percent in households making less than $30,000, and among blacks, 121 percent…