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Yes. Through Steempeak. You can post someone else's work to a new community. On the new post, 90 percent goes to original author, 5 percent to the original community, and 5 percent to the crossposter.

And you can cross post work older than 7 days, so it can earn again.

Posted using Partiko Android

someone else was trying to explain this to me as well but I didn't understand. I belong to three communities. If I cross post an older post from one of these to another, how does it earn? And the author gets so much?!

The crosspost is a new post with separate votes. I'm pretty sure the 90 percent is a percentage of the author payout, not the entire payout.

Posted using Partiko Android

Click on the three dots next to the post payout. You'll see a link for crossposting on the pop-up menu.

Posted using Partiko Android