content: In the very near future places like Reddit, Voat, or any forum or IRC will have you chatting with a bot that you think is a real person.  We already have bots posting spam.  That's the real danger - when your thoughts are influenced, not simply by paid human shills, but by bots, that can scale to billions with little effort once the technology is established.  You can be downvoted into oblivion by a sea of bots.  It can manipulate search page rankings - the rise of the internet bot is an extremely dangerous thing and will concentrate power to a staggering degree.