Anyone with a user account will be able to moderate comments. This lets people assign a score to a comment on how good they think the comment is or how visible they think it should be.

When more than one person rates a comment, the overall rating is just a simple average of all ratings. Comments with high ratings are more visible than comments with a lower rating. That way, comments that gain the approval of participants will gradually move up through statistical effects and pointless comments will sink into oblivion.