Yeah I'm kind of operating on memory from 4 years ago. My understanding was that you can also use it to keep your upvotes on comments from turning to dust.
I just upvoted this comment, and peakd says 0.019. If @dustsweeper comes along and upvotes this comment before payout, then we will know. If it doesn't, it could be because the calculations are too close and it smudged above before it checked. I should have voted a little smaller for a better experiment.