> How can social media sites control quality of submitters. I'd like to see how a system where downvotes have reasons given works? Slashdot tries for upvotes.

> How can social media sites control quality of submitters. I'd like to see how a system where downvotes have reasons given works? Slashdot tries for upvotes. Currently you might be downvoted for being offtopic, but you might just think it's because someone disagrees politically. It would be an interesting overlay to create for HN