I know I've posted information about privacy settings on Facebook before, but they can't be emphasized enough. While it's best to approach facebook from the standpoint that EVERYTHING is public, you do some control over what information is shared.
I stumbled across an article today titled, "10 Privacy Settings Every Facebook User Should Know". There are some excellent tips in this article and it's well worth your time to read.
For more information about Facebook Privacy, check out the links below. Of course, keep in mind that if you're a business owner on Facebook, you may not want to implement some of these privacy changes since they would reduce your visibility.
Facebook Places & Your Privacy
Changing Your Privacy Settings in Facebook
How to Stop Facebook From Sharing Info on Google
