Linda I think that it is how you make the settings.
When you in Facebook than have you the choices for make your profile private; no one can see your profile, you have the setting public, everyone can see you; don't do that and you have the choice for make the setting only for friends; in that last case, only your friends can see your profile.
When you be afraid that your private is in dangerous, than is it a good idea that you set the setting on private.
It is in fact the same here on Bleepingcomputer, when you make in the Computer forum in your profile, your private adres visible, than is the risk there that you get possible Spam and worse, what I did tell is not only on Bleepingcomputer, you have that problem on all forums.
This post has been edited by Computer-man: 24 January 2012 - 05:32 AM