Agorism is a libertarian social philosophy that advocates creating a society in which all relations between people are voluntary exchanges by means of counter-economics, thus engaging with aspects of peaceful revolution. It was first proposed by libertarian philosopher Samuel Edward Konkin III at two conferences, CounterCon I in October 1974 and CounterCon II in May 1975, both conferences organized by J. Neil Schulman.
A wiki including a FAQ and various other resources
Overview of Konkin's life and his two main contributions: agorism and the counter-economy
Biographical essay; including examination of Konkin's ideas on the Counter-Economy; transcript of "The Libertarian Tradition" podcast of 20 July 2010
Charles "Rad Geek" Johnson chats it up with MHD about Agorism, by Charles W. Johnson, The Motorhome Diaries
Johnson explains agorism and counter-economics, including an example relating to intellectual property (at 1:20)
The introductory paragraph uses material from the Wikipedia article "Agorism" as of 28 Oct 2018, which is released under the Creative Commons Attribution-Share-Alike License 3.0.