Trivia questions are quite guessable. I think you overestimate human interaction. :-) Look at how many people will have full on conversations with bots. And

Trivia questions are quite guessable. I think you overestimate human interaction. :-) Look at how many people will have full on conversations with bots. And these aren't even good bots. An IRC based Turing test will be passed in the next 15 years. The corpus that we have with Google/Bing/Wikipedia add to that emails from GMail/Yahoo/Hotmail, IMs and text message, Facebook messages and statuses. The computer will not only be able to have conversation, but it will be able to go from talking to you in the Queen's English to ebonics. And will be the most knowledgeable person you've ever met.