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Well, if their vote is the only vote and it doesn't reach the 0.019 threshold there is no payout so no curation. If, the payout does come, they will get a payout but, that is going to depend on when they vote i think. If you have 15 SP and vote on a trending article late, what are the chances of getting anything?

... I think...

If you use speedvoter and vote at 30 minutes I think you have a good chance. There is a LOT of automation on this site.