Just watch this video[1] of Siri asking for the user to choose Home or Work and then after the user, who has a heavily accented English, says "work" twice it offers up "walk" and "wall". There are only two possible answers, both his replies start with a "w", the first ends with a "k", and this "most sophisticate piece of AI to ever see the light of the consumer market" can't figure out he probably means work?
Edit: I work with, and know personally, a lot of geeks, hackers and researchers. I don't know anyone who uses Quora or thinks it's the key to anything.