Upvoting and downvoting
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If you want to give someone credit for something they've said, or give them a firm thumbs down for it, you can upvote or downvote posts.
Just click the up arrow to upvote, at which point the number between the two arrows will increment:
Likewise, click the down arrow to downvote, which will decrease the number:
If you upvoted or downvoted by mistake, don't click the opposite button, just click the same button again. If you upvoted by accident and you click the upvote button again, it removes your upvote. If you click the downvote button instead, it turns your upvote into a downvote! (awkward.... )