30.8% of smartphone users accessed social networking sites via their mobile browser in Jan 2010

According to hated-by-Jason Calacanis, comScore, 30.8% of smartphone users accessed social networking sites via their mobile browser in January 2010, which is 8.3 points more from one year ago. Facebook grew 112% in the past year, while Twitter experienced a 347% jump.

11.1% of all mobile phone users accessed a social networking site via mobile browser – an increase of 4.6 percentage points from the previous year. Unsurprisingly, much of this growth has been driven by smartphone owners – while 30.8% of smartphone users accessed social networking sites, only 6.8% of feature phone users did so.

In the same period, Facebook was accessed by 25.1 million, MySpace by 11.4 million and Twitter by 4.7 million mobile users. Best of all, these figures don’t include access of the social networking services by the nearly 6 million users who do so exclusively through mobile applications.