Find the connection

Shadow Unit http://www.shadowunit.org
Harry Potter and the Methods of Rationality http://www.hpmor.com
Schlock Mercenary http://www.schlockmercenary.com
Questionable Content http://www.questionablecontent.net
Wigu: Adventures in Space http://www.wigucomics.com
A Miracle of Science http://www.project-apollo.bet
Fine Structure http://qntm.org
Ra http://qntm.org

and one I'm not following, but fits the theme: Girl Genius, http://www.girlgeniusonline.com

Ice Cream

Half and half
vanilla
sugar
salt
cocoa powder
peanut butter (peanuts and salt)

Sometimes five ingredients is too few.

(Flour, yeast, salt, water. Sometimes five is too many.)