Had your Facebook searched? Does that mean they ask for your login and look through it, or look through all the publicly-available information?
Later, I worked on some of their creepy background checking software. Essentially, without the login, they can still get all the information about me they need.
I have to check my Facebook every few months to find out what sort of content is now visible to a new group of people that was hidden by me in the past.
4. You will not share your password (or in the case of developers, your secret key), let anyone else access your account, or do anything else that might jeopardize the security of your account.
It's not iron-clad, but it may dissuade the nosy.