If boys really cared about looks they would go out with every girl instead of judging her by a motionless picture.
The problem is that once a boy sees a picture of an average girl he will most likely say she is not my type and wont give her a chance. Even though everyone can agree that pictures are not very accurate representation of looks. And yes sometimes a picture might even look better than the person looks on daily basis but sometimes worse either way its not a fair way to judge looks.