Facebook privacy

People should know that anything that is posted on Facebook will always be seen. Either if a persons account is Privet or Public, it will somehow be seen. If a person hacks into your account or you forget to sign out on someone else's computer, your account isn't privet anymore. You Facebook account will NEVER be privet. I just don't understand why people are complaining about this form of "invasion of privacy". When a new user to Facebook makes an account, they agree to a contract by clicking on that "I accept the Terms and Conditions" and in that contract it says specifically not to post anything "bad". This is why you don't post anything that you will regret. SO in the future if a person has a job interview, I think it is totally okay for the interviewer to ask to view their Facebook. If it happened to me, I will have no problem showing them because I know that I don't have anything to hide or worry about. I am always careful about what I post. I don't understand why its such of invasion of privacy, you can never expect anything to be privet on the internet.