comScore, Inc. (NASDAQ: SCOR), a leader in measuring the digital world, today released a study on mobile map usage based on data from its comScore MobiLens service. The study found that 14 percent of mobile users in the U.S. accessed maps on their devices in April 2010, as the mobile map audience reached 33.5 million users, up 44 percent from the previous year. The study also found that more mobile users now access maps via application than via browser,