comScore, Inc. (NASDAQ: SCOR), a leader in measuring the digital world, today released results of a study on mobile social media usage based on data from its comScore MobiLens service, which showed that 72.2 million Americans accessed social networking sites or blogs on their mobile device in August 2011, an increase of 37 percent in the past year. The study also provided new insights into how mobile users interact with social media, finding that more than half read a post from an organization, brand or event while on their mobile device.

“Social media is one of the most popular and fastest growing mobile activities, reaching nearly one third of all U.S. mobile users,” said Mark Donovan, comScore senior vice president for mobile. “This behavior is even more prevalent among smartphone owners with three in five accessing social media each month, highlighting the importance of apps and the enhanced functionality of smartphones to social media usage on mobile devices.”