http://www.theverge.com/2016/3/25/11306566/microsoft-racist-tay-ai-twitter-chatbot-apology
This isn't a good thing for Artificial Intelligence buffs. I read a bunch of twitter posts it made and those posts match the most racist posts I have read anywhere. If a computer can be duped by a few people, it doesn't bode well for boffins that are seeking to have computers take over our mundane tasks.
The day started out okay (see the top left tweet), but went South rather quickly: