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I think bot votes should come from an account with no posts so it does not affect your reputation. It's easy enough to create one and delegate to it. Bought votes distort things. I don't think they should make a post trend. Of course it's not too hard to use indirect votes to rig things.

You are right. Most of the voting bots have high reputations and a ton of SP so as @mindhunter has pointed out it is definitely skewing the reputation system.