Ok, HN, why do you downvote this? It is a thankful positive comment.
Above with the same amount of votes, but upvotes, is "This has been in Chrome for quite a while now." which does not seem any more constructive yet spread negativity.
I would understand not upvoting this, as it is no real contribution (though I immediately understand what this was about without having to read the linked article) but why downvote?
I didn't downvote the comment in question, and I hate these meta-discussions, but anyway:
A "thankful positive comment" that adds no new information to the discussion is just noise. People downvote comments like this in order to discourage them, and keep the signal/noise ration high.
"This has been a Chrome for quite a while now", by contrast, at least adds something new-- that this is not a new feature. It's not a great comment, but at least there's some "signal" there.
'Empty comments can be ok if they're positive. There's nothing wrong with submitting a comment saying just "Thanks."'
And the definition for a comment worth downvote is "What we especially discourage are comments that are empty and negative—comments that are mere name-calling."
This is all to ensure a positive, encouraging culture on HN, thanks
Lately I began to observe downvotes patterns here on HN and saw that some people downvote instead of commenting or ignoring when they disagree with a comment or an idea, comments in topics about Microsoft, Google or Apple are a favorite target.