You could, but would it have any effect? I'd like to see okcupid doing some controlled experiments and see if stuff like changing the photo to look into the camera works or if people don't look into the camera for another reason that correlates negatively with attraction.<p>The aspect of "signalling" how biological animals act a certain way to show abilities (i.e. stick out chest for masculinity) is interesting because there is so much room for cheating. I wonder if we are hard wired in a sense to only signal the truth or if there is a arms race going on between the cheaters and the evaluaters.