comScore on October 20, revealed that in August 2011, 72.2 million Americans accessed social networking sites / blogs on their mobile device, recording an increase of 37 percent in the past year.
According to the data of MobiLens service, "Nearly 40 million U.S. mobile users, more than half of the mobile social media audience, access these sites almost every day, demonstrating the importance of this activity to people's daily routines."
"Research also indicated that although more people accessed these sites via their mobile browser, the social networking app audience grew five times faster in the past year. While the mobile browsing social networking audience grew 24 percent to 42.3 million users in the past year, the mobile social networking app audience surged 126 percent to 38.5 million," mentions comScore.
comScore study alos revealed that Facebook, Twitter and LinkedIn, each grew their mobile audiences by at least 50% in the past year.
"Facebook was home to the largest mobile audience among the three destinations with more than 57 million mobile users in Aug, up 50% -- Twitter saw a jump of 75% to 13.4 million people, while LinkedIn's climbed 69% to 5.5 million users," said comScore.
Also, note that "Of those accessing social networking sites or blogs on their mobile device, 80.3% read posts from people known personally, while 69.5% posted status updates while on their mobile device," comScore said.