I found this article this morning and thought that others may benefit from it. Checkout Why Facebook Changed Its Privacy Settings.

Privacy has become a renewed issue with the potential that a stalker or disgruntled ex can know what you are doing, where you are, and who you are with. This is a very sensitive issues that takes some time to really comprehend.

I wrote earlier that I didn’t understand people who use social media and then make things private. I now understand some of those concerns. With the advent of social platforms like Foursquare, geo-location applications in cell phones and mobile apps, and sites like RobMeNow bring the seriousness of this subject to the forefront.

Here is an additional link that I found today, Cnet Facebook Article. Hope this helps.