This is what I posted in another comment a bit before:
(Example was someone cross-posting me)
A Cross-post creates a new post under your name that has a link to my post with a short description you can add to explain. Then whatever votes your "version" (just a link to the original) gets on it will be split between curators like normal (50%). Of the remaining 50% I would get 90%, you would get 5% and the community you posted to would get 5%.
