by uploading photos/images onto our system -lrb- for instance in addition to a review -rrb- you certify , warrant and agree that you own the copyright to the photos/images and that you agree that booking.com may use the uploaded photos/images on its -lrb- mobile -rrb- website and app , and in -lrb- online/offline -rrb- promotional materials and publications and as booking.com at its discretion sees fit .