With all the privacy issues surrounding Facebook recently, you may be keeping a closer eye on your FaceBook account activity. Use this built-in Facebook feature to get notified when a computer besides your own accesses your account.

Even if you've dug around Facebook's privacy preferences, you may have missed this handy little feature. By enabling it, you can register your computer (and any other private computers from which you access Facebook regularly), and receive email and SMS notifications when a computer other than one of your registered ones accesses your account. It's a nice safety net to have should anyone ever get your password or otherwise hack your account.