NotMeNotYou said:
New CoC update: This time we added language that vote cheating is against the rules, specifically using more than account to vote on the same thing(s).

Please note that this is merely us writing this down, we have enforced this as general abuse of site tools for years now, but people keep thinking it's okay to make accounts to vote on things more than once.

How do you determine they're alternate accounts? If it's done by IP, this might catch households where multiple people with unique accounts will upvote the same posts. (My partner and I tend to do this, and I would hope it's not considered vote cheating.)