Designers Matt Robinson and Tom Wrigglesworth looked at ink usage of some commonly-used typefaces, by hand-drawing them with ballpoint pens.
Scribble, scribble, scribble, and they got this simple bar chart with ink usage measured by, well, ink:
Impact font is such an ink hog. Such a drama queen.
via flowingdata.com
s a m h o c h b e r g - m e t i c u l o u s l y r a n d o m i z e d 