That's as may be but those who's avatars show themselves are those who are content with how they look and do not mind who sees their picture. In a way if a member wants such security then they do not need to put up a picture of themselves.
Also I think a majority of non members are visiting the site to find out more about what makes us tick and to help to understand themselves as to where they fit in to our community, maybe others are researching this site for study purposes or something like that.
Just my thoughts on this one.
