Forbes: "In fact, every headline that reaches Digg's home page receives an average of 129 links, according to search marketer Neil Patel, and each of those links can push an online business' traffic closer to the coveted top spots in Google or Yahoo!'s results. Digg is by far the greatest source of links and traffic among social media sites: A popular story on the site gets as many as 100,000 unique visitors. Sites like StumbleUpon, Reddit, Newsvine and Propeller can each add between 5,000 and 10,000 more."