This would have been more impressive if the authors had used other profile data to infer sexual preference. As an example, consider those Facebook profiles tha

This would have been more impressive if the authors had used other profile data to infer sexual preference. As an example, consider those Facebook profiles that are relatively complete yet leave the "interested in" field blank. People not inclined to advertise their homosexuality might feel compelled to be honest and leave the field blank as opposed to outing themselves or posting a lie. Thus, one might infer that a person with a conspicuously absent "interested in" preference is actually gay. (Of course, there's also the chance that the profile owner simply feels that the idea of the "interested in" field seems a bit juvenile, so this particular example might be misleading.)