19. Ann Moore
Time Inc. is the biggest gorilla in the U.S. magazine business, with 126 titles and almost one-fifth of the industry's ad spending; half of American households read at least one of its titles every month. Moore has ramped up digital initiatives, and Time Inc. websites get 20 million unique visitors a month. Growth in online ad revenues has more than offset declines in print advertising. Still, these are hard times for print; revenues in 2006 were down slightly, to $5.2 billion, and operating income went up just 1%, to $911 million.