Oh I though it will put it back to your voting power if you remove the upvote. Well then it does not make sense to voting again, you are right, thank you.
But I think if they put the same memo I could just upvote some of his/her previous posts. The value would be same. But this is questionable if people would want it on different posts if the price for the spin would be higher.
You are probably right with this too. If he pays for both he should get two upvotes and the higher one should be on the post. But where will the second go?
What I am thinking is that people are really using those upvote bots for a chance for higher post-payounts so upvoting anything else with the second upvote would probably not make him mad. But I think totally think about this.
Thanks :)
As a person you have the advantage over a bot and can make decisions as they come ;-)