> So HN's system is unique since only you can see your "score" That's true for individual comments, but there's a total karma score that everyone can see. And

> So HN's system is unique since only you can see your "score" That's true for individual comments, but there's a total karma score that everyone can see. And even for individual comments you can see when they're downvoted. > and a post maxes out at -4. A tweet maxes out at 0. You can't have negative likes. > It can still lead to people trying to maximize score instead of content. Sure. You have that tradeoff in any system. If you don't have anything that is in some sense a "score" at all, people might not particpate at all, or not put any effort into it, if you do have a score then people might try to maximize it in ways you don't like.