A prime example of a fundamental feature of facebook is the concept of a single wall that all of my friends can post to. Even if I could figure out how to prev

A prime example of a fundamental feature of facebook is the concept of a single wall that all of my friends can post to. Even if I could figure out how to prevent my work/church/family friends and my college/bar-hopping/trouble-making friends from seeing each others posts to my wall, I'm still faced with an uncomfortable UI that displays posts from both groups at once. That aspect of the UI alone doesn't help me feel secure about privacy on FB.