Dismiss comment button
Bob writes a comment that doesn't carry its weight. Alice, a LW reader, can choose to up-vote, down-vote, or Dismiss Bob's comment. Dismiss advises the community that a commentent may not be worth reading, but does not notify the comment's author (Bob).
Upvoted for a good analysis of the problem, but I think the proposed solution would make the forum worse, not better - it makes the system more complex (more buttons, more states a comment can be in), and more prone to abuses (dismissing as censorship), and drama and complaints about people abusing the feature even if they are not.
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.