From Social Networking Use Triples From Only a Year Ago - NYTimes.com:
According to new figures from Nielsen, the amount of time spent surfing social networking and blogging sites had tripled since last year, suggesting "a wholesale change in the way the Internet is used," says Jon Gibs, VP of media and agency insights at the company's online division.
As of August 2009, the time spent on social networking and blogging sites accounts for 17% of the total time spent online, a number up 6% from a year ago. This change reflects a growing desire for people to stay connected with each other, communicate and share, reports Nielsen.