http://pedraitawalder.wordpress.com/2014/01/21/und-kontra/
http://de.onpage.org/wiki/Klout
http://www.digitaltrends.com/social-media/klout-reveals-new-scoring-algorithm-and-the-critics-are-quiet/#!bFvsl3
https://www.youtube.com/watch?v=s1xdw71z5CM