> From the article: 17% of all time spent on the web in August in the U.S. was on social networks, up from 6 percent during the same period a year ago . . . advertising on social networks rose to $108M last month from $49M in Aug of 2008

> From the article: 17% of all time spent on the web in August in the U.S. was on social networks, up from 6 percent during the same period a year ago . . . advertising on social networks rose to $108M last month from $49M in Aug of 2008