For those of you who are going without, F.lux is a neat little program that makes your computer a whole lot easier on your eyes by toning down the blue glow at night. It has the (hopefully unintended) side effect of making you feel a deep sense of shame when you stay up late enough to see the blue glow return.
Internet Webcomic
An Online Comic on the Internet!
Worst thing about using it is when you suddenly have to do color-dependent work at 4AM. Go to turn off F.lux and scorch your retinas.
Oh! The last comic you mentioned fl.ux, I thought it was a euphemism for bowel distress.