https://steemit.com/steemit/@l0k1/downvoting-and-reputation-my-thoughts-on-what-works-and-what-doesnt
This is my take on it. I think reputation scores are an incentive for Sybil attacks and downvotes that take money amount to stealing. I might be going a bit overboard on that last point but I think that reputation is a personal thing, and should be scored according to your own voting and the voting of those you vote on, etc. And downvoting should be like blocking, except in a more granular fashion, it downranks others position in your feed not everyones, but to a lesser degree also for everyone who upranks you, or the opposite, if they downrank you.