OK, if Valleywag’s revelation–that Digg employs editors to bury certain stories–is news to you, welcome to the nightmare.
According to someone who was approached about a job as a Digg moderator, Digg uses one moderator per topic, and their duties go far beyond patrolling the site for spam. While they don’t have the power to launch a story straight to the homepage, they can adjust the criteria to make it easier or harder for a story to make it big. And in so doing, of course, they exercise editorial judgment. When you submit a story to Digg, it’s not just in the hands of the users; it’s also at the mercy of unnamed Digg editors.