…but it might save you money/ink if you use it.

Ecofont is an Opensource font (donations are accepted) for all platforms that, according to SPRANQ, should reduce your ink usage by 20%. How? By inserting tiny holes in a thick-ish Sans Serif font.

The logic is there but why not just reduce the font size in all your printing? Or turn off “BOLD”? Admittedly it would work if you’re printing a lot of banner/header style type and don’t mind about typography, but I’m not convinced.