Screaming Penguin - Source Does Matter

Excerpt:

Mr. Carmack, cofounder and lead programmer at Id Software, is sticking to his own graphics technology. He is an absolute techno-purist who seeks to produce a common code that can run on Windows, Linux, and Macintosh operating systems--something he can't do with Microsoft's technology. And by being such a purist, he delights hard-core gamers and graphics experts. Among programmers, he is lionized for his advocacy of openness, particularly for allowing Id Software's game engines to be used to create an infinite number of customized versions of its games. And among gamers, he is praised for unapologetically making the highly realistic and ultraviolent shooting games that delight young males and horrify parents and politicians.

  RedHerring.com