The folks at Marketing Vox report:
Social networking among US broadband users has grown an impressive 93% since 2006, and has increased the amount of time people spend communicating online 18%, to 32% of total online time, according to a new report from Netpop Research, LLC that delves into social networking trends and habits, reports MarketingCharts.
The research estimates that 105 million American broadband users (76%) now contribute to social media. 92% of the 243 million broadband consumers in [China] (224 million) ages 13+ contribute to social media. This is compared with only 76% of the American broadband population.