A book on the subject was recently released by a german journalist. It is on the bestseller list and is ignored by media outlets altogether. Translated versions are in the works.

http://www.gekaufte-journalisten.de/ (german)

https://ersjdamoo.wordpress.com/2014/10/06/bought-journalism... (english blog article about it)

http://theagendadaily.com/gekaufte-journalisten-german-book-... (english news article)