[mianos]

Facebook already made a statement sayings it's against their terms of use.

There is not much you can do if the morally corrupt use something that is out in the public, specially if it is out in the wild west of license enforcement.

Most of this more open licensing depends on people being honest. If someone lies, cheats, steals and kills people for a living, it would expected for them to take someone else's work and use it against the terms of use. They probably just say the obligation as it does not count in their country.