How to go completely invisible on Facebook
If you want to stay hidden on Facebook, however, we can help you out.
When you're finished with this process, no one but you will be able to see your Facebook activity, view your photos, or see where you've checked in. Your current friends will still be able to view your basic profile - there's no way around this - but all your activities will be blank.
Note: You don't have to block all the features we suggest. You can pick and choose.