GNU GPL - Copyright helps Copyleft
gpl-violations.org

The http://www.gpl-violations.org/ project was started ~ 3 year ago
as a platform wher users can report alleged violations
to verify those violations and inform all copyright holders
to inform the public about ongoing enforcement efforts

At the moment, project is only backed by the author
more volunteers needed to investigate all cases
something like 270 reported (alleged) violations backlog