if you haven't read it yet, then it deserves a peruse

I proposed that some ways back. More curation rewards rewards voting for others, and makes no difference to self voting.

I like this idea too.

At a certain percentage, it would mean that randomly up-voting would be just as profitable as self-voting. I'm not quite sure what that percentage would be, as I think it would need quite a bit of thought and reading, but maybe that level is optimal, even if it's more than 50% for curation.