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When you resteem, you are putting that article on the wall of all your followers. So new people see the article with more possible upvotes. If more people upvote, the payout pie gets bigger, therefore, your slice of the pie becomes larger. Hope that helps.

Makes sense. Thanks uvas.

Yes the pie gets bigger but more people get a part of it so does my share get that much bigger?

I 2nd that motion. Here Here. Cheers.