Ecofont is a font type that encourages ink-saving print. This font is developed by SPRANQ. Using Ecofont, some parts of the letter is omitted — so you should see some white dots there. It is said that this font works great for OpenOffice, AppleWorks and MS Office 2007. Ecofont is available for free and supports both PC and MAC.
(hat tip: akuinginhijau.org)