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I read somewhere that the witnesses have shifted payouts from 50/50 to 65/35 in order to try to restore the peg. Not sure if that impacts curation rewards, though.

Either way, I'm pretty sure that high SBD prices affect voting behavior. You only earn SBD if you're an author, so it's just more incentive to vote for yourself instead of someone else.

The way they shift it is by adjusting their price feed up, so yes. I didn't quite understand when they first mentioned it. However, they need enough witnesses to follow suit for that to take effect and I don't believe it happened (or my interpretation of the median is wrong).

Agreed on your interpretation of affecting voting behavior though.

No you're right, those parameters are set my median consensus.