For the past four years, FierceMobileContent has been honoring top mobile applications that we think are standouts among their peers. In the second part of a series, we look back at the award winners from 2007. It was the year that the original iPhone launched, and marked significant growth in mobile Internet traffic, particularly of the social networking kind.  Some of the apps we picked floundered while others flourished. Check out how the winners fared. Special feature