The Rise of Ratings: It's Not Easy Being Greenest

Joel Makower: For all that we seem to love ratings and rankings -- from Nielsen TV ratings to Amazon rankings to Google Zeitgeist -- the green world hasn't seen its share. But green ratings may be on the rise. This past week, amid the usual doldrums of late August, ratings blossomed: two groups published green ratings for computers and cars, while a third rated colleges' green MBA programs.