what they are likely talking about is curation rewards, there are some formulas for maximizing that but curation rewards are not shit,(someone who claimed to understand it and spent a lot of time doing it was only making like $20-30 a week, he did better with a voting bot. ) a waste of time, your vote is basically worthless at this point at best, except in one way, to boost up your comments because your worthless vote still puts your comment or post higher than all the ones with 0 votes, and your vote plus someone else's puts it above all those with just one vote and so on. Exposure is much more valuable, note how only the top comments really pay out.