This is what the post means: If a post has 100 likes, you downvote it, the post then has 99 likes. Then you upvote it and now the post has 101 likes -> but it was 100 from the beginning. You're not giving it two thumbs up, just changing your previous vote.
(Sorry for my bad English, not my first language).
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deleted
· 9 years ago
Your english was great and a lot better than some people who one speak English
You won't get any extra votes though? Let's say the vote is at like 213, then you downvote it to a 212, but then you upvote it to 214 because it "adds two votes", right? It doesn't it just basically takes away that downvote you did and replaced it with an upvote. So, I guess you can say you did more work unnecessary work that someone that upvoted a post.
So basically you just made one upvote.
(Sorry for my bad English, not my first language).