1. Who Can See The Things You Share (Status Updates, Photo, Videos, etc.)
2. Who Can See Your Personal Info
3. What Google Can See – Keep Your Data Off the Search Engines
This is a great article, the only thing I would add is see what your pages look like when you’re logged out. Go to your facebook wall and copy the web address so you can paste it into your browser once you’re logged out. I do the same with twitter to make sure I know what all visitors see.