Ecofont is a font that you can download free, and use on your PC or Mac computer. There are small holes in the letters. When you print pages using EcoFont, since the holes do not consume any toner, you will save ink. EcoFont uses about 20% less ink than the average font.
An ingenious idea!
EcoFont can be used in all your projects, free. It works best when using 9-point and 10-point type. (When using larger type, you might begin to see some of the holes).
Download EcoFont from the EcoFont home page:
http://www.ecofont.eu/ecofont_en.html