[2] He is a frequent speaker at transmediale,[3] addressing topics ranging from "the automation of rave"[4] and "how money is failing"[5] to questions about contemporary fascism[6] and the problems of speaking about "internet freedom".

Since then he has been lecturing extensively, on subjects related to "the collapse of copyright" and the future of music, at various European conferences addressing art and/or new media.

[18] During January and February 2008, he stayed as an artist in residence in Vienna, invited by Transforming Freedom,[19] an audio archiving platform based in the Viennese Museumsquartier to live there while doing mainly theoretical and conceptual work.

In the early 2000s, he worked for some years as a journalist for Arbetaren, the weekly newspaper of the Central Organisation of the Workers of Sweden, a syndicalist union.

[25] Since 2010, Fleischer's writings has appeared several times in the anarchist magazine Brand and has written essays presenting the thought of the Marxian thinker Robert Kurz.

[26][27] His essay Det postdigitala manifestet (2009, in Swedish) analyzes how the contemporary culture of digital abundance produces a reevaluation of physical presence, taking examples mainly from the area of music.