Check the link at the bottom of the index page here for the terms of use That will tell you if they violated anything by posting the picture. Images are tough to control on the internet. The lines between copyright and public domain are crossed on a daily basis on the internet. Policing it is a major issue and legalities are sometimes unclear, at best. It is also way above my knowledge, so your best bet is to e-mail support for help. They have been slow in responding lately, however.
