At the risk of beating a dead horse, I think the tricky thing in evaluating comment voting is this: It's easy to look at a thread and see that junk comments wer

At the risk of beating a dead horse, I think the tricky thing in evaluating comment voting is this: It's easy to look at a thread and see that junk comments were downvoted, and conclude it's working. It's harder to know which comments were never posted at all.