Facebook changed the T&C of the site, basically everything you upload to FB is property of FB and can never be taken off.
The CEO of FB responded due to a highly contested buzz of this in the following blog post on FB.
The answer is as blurry as the actual T&C, you just have to know that “Everything You Say Can and May be Used Against You”
Update: the day after the post from the CEO, FB decide to revert and go back to the old T&C. in the meantime he’s opening the debate on the Bill of Rights: The power of the online debate …