Update on Fonts:
According to our research on www.CodeStyle.org we use the following monospace fonts on our page due to their circulation.

MONOSPACED: (installed)

1. Ⓦ Windows: Lucida Console 96.03%
2. Ⓜ Mac: Andale Mono 85.23%
3. Ⓛ Linux: Bitstream Vera Sans Mono 80.81%

SANS: (installed)

1. Ⓦ Windows: Lucida Sans Unicode 93.23%, Lucida Sans 77.36%
2. Ⓜ Mac: Lucida Grande 88.47%
3. Ⓛ Linux: Bitstream Vera Sans 79.12%

• (The Bitstream Vera fonts are available for free copying and redistribution. They can be modified as long as the font name is changed. The fonts cannot be packaged by themselves for sale, but can be sold with any software. The GNOME Foundation will incorporate the fonts into GNOME releases, giving end users of all levels, as well as GNOME developers, the advanced display capabilities they offer.)

Download Bitstream Fonts: ftp.gnome.org/pub/GNOME/sources/ttf-bitstream-vera/1.10/

Andalé Mono (also known as Andale Mono, Monotype.com) is a monospace sans-serif typeface designed by Steve Matteson for terminal emulation and software development environments. The Andalé design was originally created by Monotype, as part of Andalé font families.

Andalé Mono was first distributed as an Internet Explorer 4.0 add-on, originally under the name Monotype.com. In version 1.25 of the font, it was renamed to Andale Mono, distributed with Internet Explorer 5.

While this typeface is no longer distributed with modern versions of Microsoft Windows (from Windows ME onwards) it is still available for download as part of the Core fonts for the Web package on Sourceforge and it is bundled with Mac OS X.
This typeface is used by programmers for use in text editors and IDEs for its legibility and easily identifiable characters.
Designer(s) Steve Matteson