Will the smile on my face turn to plaster

I have read about this before, but just today came across this article in Wired. It is all about emotion recognition software which has been put together at the University of Amsterdam. I find it hilarious that we are always so insistent on getting machines to do what we do so well instinctively. According to this "emotion recognition" software, the subject of the Mona Lisa is 83% happy, 9% disgusted, 6% fearful, and 2% angry.