Excellent, a great example of POS, the more Steem you own, the more you can downvote. And you lose none for downvoting, awesome. /s Ergo, your experience. Paid downvotes might work.
yes. fixed rate of 20% daily. but even with the same percentage voting weight, users with 10 steem power and users with 1000 steem power have different effects on upvote.