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I don't think there's a simple mathematically-proven answer. I currently don't vote until post is 10 minutes old, and I tend to skip posts that are $1+ already (unless maybe they have obvious potential for $100+). But all this is more of a gut feeling rather than statistically proven strategy to follow.

Thank you for sharing. Apparently, there must be a strategy in upvoting :)

I am not sure if it has changed, but I believe the rewards diminish the less time that has elapsed toward 30 minutes. And I think the first 10 voters get rewards for curating.

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