It can't really be done. The users who are actually using it for abuse purposes would just create a second account, and upvote account 1 from account 2 to get around it.
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It can't really be done. The users who are actually using it for abuse purposes would just create a second account, and upvote account 1 from account 2 to get around it.
Yes, but that would make it a bit difficult.
It is not difficult at all.