Corrections

The "Strategy of the Week" in the March 31 issue incorrectly
stated that Walter Mossberg, technology columnist for The Wall
Street Journal, only reviewed technology products that are both
Windows and Mac compatible. Mac compatibility is not a factor in
his reviews...In the front page article on measurement that ran
April 7, Natasha Spring's title was incorrect. She is executive
director of the IABC Research Foundation and the executive editor
of Communication World.