Facebook's own Terms of use state: "by posting Member Content to any part of the Web site, you automatically grant, and you represent and warrant that you have the right to grant, to facebook an irrevocable, perpetual, non-exclusive, transferable, fully paid, worldwide license to use, copy, perform, display, reformat, translate, excerpt and distribute such information and content and to prepare derivative works of, or incorpoate into other works, such information and content, and to grant and authorise sublicenses of the foregoing.

And in its equally interesting privacy policy: "Facebook may also collect information about you from other sources, such as newspapers, blogs, instant messaging services, and other users of the Facebook service through the operation of the service (eg. photo tags) in order to provide you with more useful information and a more personalised experience. By using Facebook, you are consenting to have your personal data transferred to and processed in the United States."