Slashdot's sortition was reasonably decent. Its moderation system, based on finite bounded votes (-2 - +5) though was inherently cripling, as well as the lack of convergence. Any one moderator could shift votes by a full step, regardless of how many others had moderated.

Despite a low (<6 digit) userID, I abandoned moderation a long time ago.

More recent developments have further deteriorated the site... Oddly enough, also utlimately trust-related.

And, it turns out, based on trust violations of another Dice property, SourceForge.