(Prudent Press Agency)---SAN FRANCISCO--Americans are more concerned than ever about the time they spend working inside their homes and the dwindling amount of time spent on leisure activities, according to iRobot Corp.s (Nasdaq:IRBT) Balance at Home survey. The national survey of consumers, conducted by StrategyOne on behalf of iRobot, indicates that Americans spend 40 percent of their in-home waking hours tending to household chores such as vacuuming, washing the floors and preparing meals. iRobot unveiled the survey findings at the fourth annual BlogHer Conference held July 18-20 at the Westin St. Francis in San Francisco. ...