There is a tendency to upvote comments you agree with, and downvote comments you disagree with. This has two ill effects: 1) Witty and popular viewpoints rise

There is a tendency to upvote comments you agree with, and downvote comments you disagree with. This has two ill effects: 1) Witty and popular viewpoints rise to the top, creating an atmosphere of superficial groupthink 2) People with unpopular (but insightful!) viewpoints may be discouraged from posting them. Given this, would the level of comments improve with the following change? Replace the up/down vote buttons with a single button next to each comment that reads: 'insightful', and use that to vote up comments. Forget about downvoting stuff - the low content viewpoints and rudeness will both sink to the bottom. Or if you wish, add a 'flag' box for comments made in poor taste. Using such specific labels would make people think twice before voting, both about the purpose of their vote and if the comment needs a vote at all.