YouGov has released its BrandIndex Rankings for 2012, which compares BrandIndex Buzz scores of brands across major consumer categories in 10 countriest: the USA, the U.K., Denmark, Finland, France, Mexico, Norway, Saudi Arabia, Sweden and the UAE. Along with determining which brands generated the most buzz throughout the last year, the study also reveals the most improved brands of 2012. YouGov asked its respondents just one question, “If you’ve heard anything about the brand in the last two weeks, through advertising, news or word of mouth, was it positive or negative?”. The score of each of the brands was calculated by subtracting negative feedback from positive feedback. View some highlights from the research below.