I'm very concerned that list of 'good museums' - only some o them are really 'good' which means no hidden copyright, no potential problems in future. So I'm paranoid about it. Today we have Prado, Thyssen, Mauritshuis.. but they want us to be 'good' , 'fair use', educational, non-commercial.. WTF?? there are really good ones like NGA &almost all American museums that say 'do whatever you want with these images'