There could be two kinds of downvotes: * "I disagree" downvote * "This comment has no value" downvote First downvote can be used for arguments like "let's incr

There could be two kinds of downvotes: * "I disagree" downvote * "This comment has no value" downvote First downvote can be used for arguments like "let's increase taxes to the rich because, this way we can build more fair society, European countries have shown that high taxes..." Second downvote can be used for comments like "Let's tax these rich bastards". I want to also mention reddit voting system which I kinda like: they have downvoting, but they also have a sorting by "controvervial": top comments are the comments with high number of both upvotes and downvotes, such comments really help to see the full spectre of opinions in discussions, while the universally true and not interesting comments everyone agrees with like "we should not kill people", are below controversial comments.