7. Manage your applications privacy

Just because you've reached the highest level in Mafia Wars doesn't mean you want updates on your minute-by-minute action on your Wall. (Plus, you can keep pretending that you're working on that presentation 24/7 and not taking a Mafia War break every 45 minutes…)

Prevent applications from posting to your wall in Settings > Application Settings.

8. Don't let Facebook use your information in advertisements.

If you don't want all of your friends to know that you've become a fan of The Official Mariane Rivera Facebook Page, disable this feature in Settings > Facebook Ads.

9. Don't trust Facebook security. Read this article on how Facebook employees have one master password they can use to enter any account and use your information.

10. When it doubt, take it out. Security settings change frequently and without warning, so if there's anything in your profile and photos that could possibly be used against you in any way, it's probably in your best interest to remove it from Facebook. Especially if it's a photo of you getting a lap dance in 2006.