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Yes, here is a post: https://steemit.com/steem/@emrebeyler/hidden-gems-on-the-blockchain-disabling-curation-rewards-on-your-comments

But I'm pretty sure that disabling it doesn't give more rewards, but only nothing for the curators.

Yes, this post might be misleading. I believe after some source review of steemd, it turned out author rewards stays the same.

Ah, good to know. Thanks. =)

Interesting. The curation rewards presumably bounce back to reward pool, just like if you vote before 15 minutes.