4. Critical Rationalism blog created and moderated by Matt Dioguardi & friends.
5. Critical Rationalism Facebook group created and moderated by Matt Dioguardi & friends
13. The Karl Popper Society YouTube series where someone different is invited for a public interactive conversation on a regular basis.
15. Ourkarlpopper.net — Have you submitted the story of how Karl Popper made a difference in your life yet?