Social Media, Networking Now 17% of Total Internet Use

Social networking and blogging sites accounted for 17 percent (about one in every six minutes) of all time spent on the Internet in August 2009, nearly three times as much as in 2008, according to the Nielsen Company.

“This growth suggests a wholesale change in the way the Internet is used,” says Jon Gibs, Nielsen VP. “While video and text content remain central to the Web experience, the desire of online consumers to connect, communicate and share is increasingly driving the medium’s growth.”

The popularity of social networking sites such as Facebook, MySpace, Twitter, LinkedIn, and Classmates.com more than quadrupled from 2005 to 2009 as well. In September 2009, Facebook had 90 million U.S. users and 300 million users worldwide. Also, those users increased the amount of time spent on social sites 83 percent from 2008 to 2009, Nielsen says.

As always is the case, marketing and advertising efforts "follow people."  U.S. advertisers spent an estimated $1.4 billion to place ads on social networking sites in 2008 and advertising expenditures are predicted to rise to $2.6 billion by 2012.

More specificially, advertisers in some verticals made huge new commitments to social media as an advertising medium. The entertainment vertical, for example, increased its spending 812 percent year over year. The travel industry increased its spending 364 percent, year over year.

To be sure, aggregate social site advertising remains a small percentage of overall ad spending. But rapid growth is the story.