June 2011: The Definitive Facebook Lockdown Guide | ZDNet
Excellent guide to securing your Facebook account, in key areas including Profile Page, Account Settings, Privacy Settings and other Miscellaneous "Bits."
We've all been there, when you discover that Facebook, or one of your Friends, is sharing something - an event, a check-in, a photo, a tagged photo - that you'd rather not be out there for the Facebook world to see.
Locking down your Facebook account in these ways is the best way to maintain control over your personal data and statuses. Unfortunately, with Facebook regularly updating its service - and at times just plainly establishing new "default" privacy policies along with those same services - the process of securing your information should be monitored, and updated on a regular basis.