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that would be useful indeed! I suppose it's just a function

I like this. But I think I'd like to have the slider a one step process. I can slide it if I want, and then click it anythime on that article.
A floating upvote tool was recommended by someone. Was that you?
Seems like having the slider vertical on the side, along with the upvote button and amount like you proposed, floating so it's always in reach, would be a nice convenient improvement.

Very nice! Hope they implement something like this!

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