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I am not 100% sure yet, but I think vote selling your votes on minnowbooster for SBD is 20-40% less profitable (on average) than auto voting popular authors.

I think now it's popular votes > vote selling > self voting > vote exchanging

The more SP you have, the more curation you get. If a post reaches 40+$ the rewards start to get ridiculous due to the new curve.
20$ is equal to the old curve.

If steem ever reaches 5+$ again, we will see the 1000$ posts again...