Matthias Süßen is a freelance journalist, blogger and mobile journalism trainer based in Kiel, Germany. He was born in East Frisia. Throughout his life, he has lived in a number of cities like Oldenburg, Berlin, Leipzig, Langenburg, Bremen and today, resides in Kiel. He became a Wikipedian on August 23, 2005, and is mainly active on the German Wikipedia and Commons, but also contributes to other language versions of Wikipedia. On Wikipedia, he mainly tries to improve East Frisian articles but also other articles that needs improvements.