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Currently the downvote icon is directly below the upvote icon. This gives a small margin for error and I have noticed a few times were people have accidently downvoted an artcle due to this. Instead of the layout we have now ( A= Upvote icon and V= downvote icon):
A Name n minutes/hours ago | link
V
I propose that a layout such as this:
A Name n minutes/hours ago | link V
At least to me it would make more sence from a usibility regard to avoiding misclicking and more useful for those upon smaller screen sizes as well.