Mobile social media audience jumps 37%

ComScore: More than half read posts from organizations, brands or events

The number of people in the U.S. who visited a social networking site or blog on their mobile device jumped 37 percent in the three months ending in August compared to the same time period in 2010, according to a report from Web metrics firm comScore.

That double-digit jump means nearly 72.3 million people, or about 30 percent of those 13 and up who own mobile devices nationwide, accessed a social media site during that time period. More than half of those people, nearly 40 million, did so almost every day.