Its name says it all. Ecofont will help you use up to 20% less ink.
The tiny holes look clunky when enlarged, but according to the developers, its very usable when set to normal size, 9 or 10 point. But right now it’s only available in Sans Serif.
Ecofont was created by a Dutch company called SPRANQ. They hope their little invention will inspire computer manufacturers to innovate in a more environmentally conscious manner.