Forgive the unclear terminology- what I mean is the code for these bots is not running on top of the Blockchain, they are hosted on the bot owners computer, so there's no way to directly block them through a software update. How do you propose bots purge bad posts? The economics are wrong. Bots have no incentive to downvote bad posts on their own, and bot upvotes spur on indavidual upvotes in hopes of curration rewards. Am I missing something here?