Emerging markets will be the first to get the devices *********************************************EXCERPT************************************** BARCELONA, Spain--Mozilla formally launched its Firefox OS here ahead of the start of Mobile World Congress. However, the smartphone platform is focusing its attention on emerging markets and will likely not launch in the U.S. market until 2014.Mozilla, best known for its Firefox browser, said the first Firefox OS devices will be available to consumers in Brazil, Colombia, Hungary, Mexico, Montenegro, Poland, Serbia, Spain and Venezuela, and that additional markets will be announced soon. The platform seems clearly aimed at emerging markets, and Mozilla CEO Gary Kovacs said the platform...