Do men help only beautiful women in social networks?

Is the Social Network profile photo important when women need help? In two field experiments (N = 681), male and female participants received a help request from a woman of below-average, above-average (Study 1 and 2), or a woman of unknown physical attractiveness (Study 2). Men (but not women) responded more often, answered more detailed, and were more helpful and friendlier to the above-average physical attractive woman (Study 1 and 2), but if...