http://www.libresociety.org/

http://www.storyofstuff.com/international/index.html

http://www.pharmacratic-inquisition.com/main/

http://neurosoup.com/in_favor_of_a_secular_approach_to_entheogens.htm

http://www.atheisme.eu/forum/

http://www.ontmoetingspunt.net

http://forum.skepp.be/

http://www.filosofiemagazine.nl/00/fm/nl/forum/Forum.html

http://johnallegro.org/main/

http://www.youtube.com/watch?v=xX0tOEz5MYA&feature=PlayList&p=D44F8367524C4D8C&index=0

http://de.wikipedia.org/wiki/Immaterialität

http://de.wikipedia.org/wiki/Immaterialität