I think it is helpful to refer to an article of dan (@dantheman) one month ago, where he addressed the rising issue of bots and A.I.
He concluded his article
https://steemit.com/steem/@dantheman/curation-rewards-and-voting-incentive
with the following:

Conclusion

The existing curation rewards algorithm, once properly understood, will >spawn an arms race to build better bots. This means Steem will motivate the >development of the decentralized autonomous curator. It will spawn research >into advanced artificial intelligence algorithms that are able to predict viral >content early.
Curation is a game for whales and dolphins. Minnows are unlikely to earn any >significant return on their votes. Minnows should stick to posting and >commenting.
People will buy Steem Power just for the opportunity to apply their own >curation reward algorithm in an attempt to out-earn other Steem Power >holders. Algorithm development will advance like ASIC development.
That’s the theory. What do you think?

Thanks @stellabelle to make this subject a main point of discussion. We all have to know more and better about this upcoming and irritating issue.