I read yogi.artist's post and am still not convinced. Getting to the bottom of this is going to take some time, but you have brought up an important question about AI: Can AI writing fool the public? This is something worth examining.
I read a year or so ago that a computer passed the "Turing Test", but that was even a little controversial. Furthermore, I have posted to the Google+ AI Community about this and hope to get some knowledgable answers.
In the mean time, I am still researching this matter...