Voting works well with small-to-medium communities of readers invested in the quality of discussion, but breaks down in large groups. Look at some of the larger

Voting works well with small-to-medium communities of readers invested in the quality of discussion, but breaks down in large groups. Look at some of the larger subreddits - people in the comments complain about the quality of frontpage articles because the voting group becomes much larger than the commenting/discussion group. I wonder what's going to be the next big innovation in filtering the firehose?