http://imgur.com/yUopqBr

I have been following this debate for a week now. All the credit in the world given to @anyx for his constant search for the right solutions to hard problems.  Additionally, to the many steemers who want to solve the problems indicated:  bravo.  It behooves us all to solve these problems and make our Steemit world a better place. It is a problem that needs a resolution.  

Here are some of my thoughts:  

1. Plagiarism - For those who blog regularly, it is pretty cut and dry -- Don't use someone else's work and a.  claim it as your own, or b. fail to give credit and name the source.  There are other minor points (putting partial info in quotes from source), but basically that's enough.  If you do those things, most people won't have a problem. 

2.  I don't like the downvote.  There should be other ways for everyone to flag a post (anonymously). Flagging a post NEEDS to be anonymous if we are to keep everyone involved in catching plagiarism and spam. If it isn't, you will have childish revenge flagging.
     a. How about if a post has more negative flags than upvotes, it comes under review.  
     b. Or if a post has more that 1 negative flag, it comes under review.  
     c. If you need to, you could limit negative flags to 2-5 per day, per account.  
     d. When something comes under review, it could be put in a separate tag immediately and reviewed within  a predetermined timeframe.  If cleared, the time could start over so no monetary loss is involved.  That post would then not be able to be flagged again.
  
3.  Bots - I think they serve a useful purpose, however I think they should not be able to upvote a post.  This is a community, of which they are a part, BUT we want original posts, do we not?  Unless I'm way out of touch with technology, I don't think bots can read AND reason to determine content.  I say, if you want to make Steem/crypto (and who doesn't), do it on a level playing field like the rest of us humans.  READ, post and pick good stories/posts. 

So, in summary, here is what I think could happen:  

     -- Use more bots for the technical grunt work (sorry @cheetah) as a time saver.  However, take away the power to upvote.
     -- List the human owners of each bot with a "bot registry" (thx to @williambanks for that suggestion)
List the main account name (i.e. @Anyx for @cheetah), not the human name.
     -- Take away the downvote.  Replace it with an anonymous flagging system.  Limit negative flags to 2-5.

These solutions, while not all encompassing, should eliminate most of your spamming and plagiarism.  Steemers will want to help more, under the cover of anonymity, to prevent retribution. More bots could be used, with a monetary incentive built in.  This would help offset the loss of steem after the bot upvote is eliminated.  The loss of the downvote and the flagging anonymity will provide the cover that we need to keep police ourselves.  That being said, maybe I am full of it.  Let me know.  Just spit-balling here.