I think they are usually a good thing. Someone says something incorrect or mean they get downvoted. But like anything else they can be misused as well. I do remember getting downvoted for posts I couldn’t see anything wrong with, but life and people are like that and once I made peace with that fact I was fine with it.

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I love them. It’s really good for communities to have a way for people to express opposition other than posting a response, and even better when it results in those controversial comments being de-boosted. A lot of other social networks would be much better off if they allowed that sort of reaction from their users.

Yum tasty downvotes. Its only the internet, it can be very fickle.

Used to show relevancy. If the post or comment isn’t relevant then I downvote it. Otherwise I upvote it

The buttons should be either 'insightful ’ or ‘funny’

And those should be the only options you get.