From SEOmoz:
When folks think of Digg, they’re often misled into believing that the content seen on the homepage is representative of what a wide base of Internet users think is news-worthy and important. The numbers tell a different story – that of all stories that make it to the front page of Digg, more than 20% come from a select group of 20 users…
A logical extension shows that the top 100 Digg Users have contributed 14,249 stories to the homepage, or 56.41%. At Digg, a very select group of users is dominating the popular homepage content. Far from being a mass of opinion, Digg is instead showing, primarily, the content opinions of just a few, select folks…
It is something that many folks who use the site don’t realize and many marketers or folks attempting to use it to promote their content should be aware of. Like the college frathouse, it pays to know the right people at Digg.
(Image from UrlyArt.com)