comScore’s latest numbers are out, and they paint a familiar story: social networking is on the rise. It’s the rate of growth that’s surprising, though.

According to the web analytics firm, the average online user in the U.S. now spends nearly 16% of his or her time on social networking sites such as Facebook, LinkedIn, Tumblr or Twitter. That’s up from just 8% in July 2007. In the last year alone, social networking use has increased by approximately 25%.

The biggest reason for the increase in social networking is Facebook and its 700+ million users. READ MORE