[tokenadult]

That's an interesting karma (and "clout") model there, which may be of interest as an example of how social clues can promote good discussion.

[markkat]

Thanks. It's unproven at scale, but so far, so good!

IMHO it's more effective to make water flow where you want, rather than to keep it from flowing where you don't. :) A little of both is necessary, but I think the first approach has more stability.