Georgina Turner: Success of World Cup in U.S. not easy to measure

This summer's Women's World Cup in Germany has caused quite the buzz, with one of the biggest stories being the gigantic television ratings. As well as selling out stadiums for all of its own games (and several others), Germany can boast average TV audiences close to those that watched the men's World Cup last year. By the end of the opening game against Canada, 18 million people -- a quarter of