Facebook's Trainwreck

I just read Boyd's article about Facebook's Trainwreck. After reading it I revisited my privacy settings for my Facebook account and realized that I hadn't fully understood some of the settings. Now I have a much better understanding of my privacy settings, particularly as related to the News Feed feature (which was the focus of Boyd's article). So, if it took this much for a reasonably educated and cautious adult to get my privacy settings right, what are the chances that students who just sign-up and go get it right?

Facebook - private vs. public

I'm getting more comfortable with Facebook and being able to leave messages versus writing on someone's wall, etc. I will say my daughter has helped accelerate the learning curve a bit.

I randomly picked a dozen or so of my students names, just off the top of my head, and was both surprised and pleased to find out that most of them had their Facebook set to private. I wonder what the statistics are and if it varies between HS and college students, or between genders.