In another sign that social media is changing the landscape for content producers, advertisers and audiences, news-sharing and commenting site Digg has secured $8.5 million in funding led by Greylock Partners and Omidyar Network, reported PaidContent.

In the past year, Digg expanded its coverage of tech news and integrated video into its site. Digg's service combined user-generated content and social networking functions.

Digg' advertising is provided through Federated Media.

Digg says it plans to hire new developers and expand its business. 

"Our board and investors did not want us to focus, at any time, on monetization at this stage," said CEO Jay Adelson. "Our focus has been on user growth."