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I wish there where projects on the blockchain already that offer a better ROI on (delegating) STEEM for passive investors than bid bots.

I haven't found any. If you know of any let me know.

Imho, the first project that offers a better ROI on delegation than bid bots will kill the bid bot industry instantly.

Not that I was aiming to promote it but check out @ocdb, it's more of a distribution bot than a bid bot though. It has a queue and only votes at 100% VP with a fixed return to whitelisted authors and takes no cut, meaning it's fully non-profit.

Thanks for letting me know!

afaik @boomerang pays 100% as well