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Admittedly I don't fully understand how the blockchain works, but a post would only gain traction if the ratio of votes to page views was high. Someone would not only have to manufacture page views, but do this in conjunction with legitimate votes. Otherwise the ratio would be low and the post would be regarded as low quality. From what you say, I can only see that happening if someone wanted to bring someone else's post down?
I'm really interested in (and new to) this so appreciate your feedback