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.