Earlier quoted context omitted.
I've never used Slashdot, how is the moderation model superior?
Instead of plain up- and downvotes, you rated a given comment with one of several positives (insightful, interesting, funny, informative) or negatives (troll, flamebait, offtopic) The best part was you could set your personal filters to exclude “funny” comments, or boost “offtopic” ones if you want. With thresholds! So the funniest stuff could still break through, but you didn’t have to wade through a million pun pos…
You're right, it was a pretty good way to do moderation. As in everything with software, what old is new, right?