Is Digg self-perpetuating and insular?

Allen Stern, has thrown out an interesting jab in response to my recent post on questioning if Google is being incestuous. Even a Google employee came back and slapped me, be sure to read the comments.

Is Allen right? He suggests that if Google were to promote their own, then should Digg be allowed to? I see more and more stories on the front page of Digg be about Digg. It’s almost as bad as bloggers blogging about blogging.

I did a search of stories where the title (not descirption, just title) have the term Digg in it, and it was on the front page. There are thousands of stories that return in the results.

At what point can we stop trusting websites that self feed? I guess never, since almost all do it.