Someone pointed me to this and I just had to share it, because not only is it about My Little Pony, but it is also a geeky treatise on a geeky subject.
Or, as Princess Luna would say...
BEHOLD! THE GEEKINESS HAS BEEN DOUBLED! /RoyalCanterlotVoice
(To properly view the picture: Right click on image; select "Open link in new tab"; click to embiggen.)
If I can find out who made this, I will ask their permission if I can include it in Unknown Ponies.