Larry Cafiero is sitting in his cluttered office in the Santa Cruz Mountains looking nothing like a revolutionary. Friendly bearded face. Casual blue jeans. Comfy work shirt with the little penguin logo. Yeah, penguin logo. See, Cafiero is a Linux guy. Maybe you know one—or a Linux woman. Maybe you know that to love Linux is to live Linux—that you don’t just use free and open source software, you embrace it and evangelize it. Some more than others.