'Learning from the internet' was destined to fail. The internet is filled with so much sarcasm, so many memes and trolling that this was inevitable. Their whole premise just sucked. And of course, once people realized they could influence the bot, everyone just upped the level of trolling... On the plus side, I was entertained. I'm sure many people were (maybe not Microsoft investors). It was pretty damn hilarious.
Science fiction premise: We create a truly sentient AI. The Internet's immediate knee-jerk reaction is massive trolling. AI decides to destroy humanity because the vast majority of the data we've supplied to it indicates we're massive assholes. (Also an addendum to the category, "This is why we can't have nice things.")