Users visiting Web sites that contain adult content sometimes make unconscious facial expressions. If Opera keeps opening Speed Dial and Zooming In and Out, please be aware that this not a bug. It may be useful to disable Face Gestures for a better experience. Also remember that wiping your cache is recommend after visiting untrusted websites."
Look at some of the works done by Iain Matthews and Simon Baker at CMU here:
http://www.ri.cmu.edu/research_project_detail.html?project_i...
and you can see that they have already realized realtime face tracking with dense registration ( which allows expression recognition ) based on the LK-inverse composition algorithm applied to AAMs
Facinating stuff =)
Face Observation Opera Language, eh?
Tweeted it. Went back and read it properly. Realised it was april 1st. Do'h