I agree that XP is already over-rated as it is, but if you wanted something like this, don't implement new features. Just make it so that we can vote on the same node more than once. This could always be overdone, but who knows. In that case, downvoting should be limited to a one-time thing, while upvoting could be done multiple times. But, I have a feeling that if you love a node, others will love it as well and follow with an upvote as well. Which just nullifies any real need for this. :) I'm (over-)satisfied with the current system, I say keep it as it is.

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