Case in point, I was looking for the "Are You A Scary Manager" article posted there a few weeks ago. I did a search on "bad manager" and "scary manager" and got no results.
But I did a googd search on "are you a scary manager" and the source article popped up on top and the digg entry came up second.
In other words, and external search engine (google) works better than Digg's own internal search engine.
If I was Digg, I would be embarrassed by this.