Go read pg’s comments on downvoting. HN has always been fine with using downvotes to signify disagreement.

> Go read pg’s comments on downvoting.

Hmm. That sounds an awful lot like "It's true! Google it!"

	▲	sarchertech 26 minutes ago \| parent [-]
		Well if you’d googled it you’d have seen it was true. From pg in 2008. >I think it's ok to use the up and down arrows to express agreement. Obviously the uparrows aren't only for applauding politeness, so it seems reasonable that the downarrows aren't only for booing rudeness. https://news.ycombinator.com/item?id=117171