The Author Marie Katharina Wagner interviewed me for her book: “The Pirates: From a lifestyle to power factor”. The relevant pages can be found on Google Books. Here is a link: https://books.google.de/books?isbn=3641094070
The Book is written in German and the Interview was also held in German.
I joined the Pirate Party in 2007, and resigned in 2009. The interview happened after I was not a member of the party anymore for three years, .