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 incorporate into other works, such information and content, and to grant and authorise sublicenses of the foregoing.
— little excerpt from Facebook’s terms and conditions