Therefore, there can be a rule that voting for the same user, whether oneself or another, will decrease the power of each subsequent vote, within a limited period.
Really interesting ideas and I think it's a huge contender for dealing with the self voting problem. It's also very comprehensive because it simultaneously changes the incentive for so-called "circle jerk" behavior, which is a similar issue to self voting via other accounts (sock puppets).
Looking forward to hearing more debate on this but at present I actually think this is the best idea going for a blockchain system level solution to self voting.
💯 😎