I'm more concerned about basic social textual interaction. How long will it be until you can no longer be certain that I'm not a bot? Given that most online interaction is topic centric and limited in interactivity it becomes a sort of really lobotomized Turing Test and I have 0 doubt that militaries, intelligence agencies, major corporations, and more are all very actively researching this. And I see no reason to think it's anything that will prove to be insurmountable.

Online polls (even with brief responses) are obviously completely meaningless exercises in self-selection bias, but it's going to be weird that probably not all that long in the future - even discussing things on the internet may end up becoming of questionable value. Perhaps that will signal the end of anonymity in discussion. And wouldn't be that be a world - when people can link you to the most idiotic things you've ever stated online, in your entire life. Talk about a chilling effect on discussion.