It also forces a downvoter to justify why something is getting downvoted.
http://news.ycombinator.com/item?id=117171
He is still thinking about tweaking the forum settings here to ensure good discussion. On my part, I'm a good bit more disappointed when a user asks a polite follow-up question (for example, "What would be a source I could check to confirm that fact?") and that kind of comment gets downvoted. Why do people disagree with trying to find out more information to enlighten the discussion?
The 'citation needed' ones are another matter.
http://news.ycombinator.com/item?id=1552233
Regardless of whether I deserved to be downvoted, there is zero reason for the person asking for a cite to get upvoted considering the the relevant article is literally the first Google result for "old spice" "hormone disruptor".
I think it's bullshit that people regularly get downmodded for posting comments quoting basic facts that everyone should know, or at least know how to verify, without citing a source. If you don't know how to, say, look up the GDP of a foreign country yourself then you really have no business being on this site to begin with.
Most of the 'citation needed' comments say just that and no more.
In the end though, the example linked is a pretty good one in that the base claim ('old spice causes infertility') is indeed somewhat supported but not to the extent that you're in acute danger: http://www.cosmeticsdatabase.com/browse.php?brand_id=705
I couldn't care less because I can't use aftershave anyway but I can see how that might be a problem if you used it every day (or even twice a day for the 5 O'clock shadow).
Down voting a comment to zero or negative based only disagreement feels the enforcement of opinion.
And I've noticed that a more often lately...
So what? If you think that karma means something significant, you're doing it wrong.
As to whether "thoughful" comments get significant downvotes, I don't see it. Instead, I see a bunch of earnest twaddle.
Symptomatic of that is the belief that "thoughtful" is a worthwhile characteristic. It isn't.
> The worst trend I see is comments getting downvoted based on opinions expressed within, not on how poorly they are expressed.
Artfully expressed nonsense is still nonsense.
In other news, HN isn't intended to make you feel good about yourself, no matter how special your mother says you are.
I find it interesting that expressing this opinion is one of the surest ways I know to gain a negative score for your comment.