Allow me to let you in on a little secret: I am 100% amoral. That's right: I do not have a shred of morality in my being. Not a jot, a tittle, a soupçon, or a wee dram. None, zero, zilch, nada.
Before you get alarmed you should ask me the very first question you should always ask a philosopher: what exactly do you mean by "morality"? And there's the rub. I do not do anything, ever, only because it is the right thing to do. I act only to maximize my own personal happiness and satisfaction.
As it happens, I have a brain: I can remember the past, predict the future, and imagine possibilities. I can rationally know that my own happiness and satisfaction is greater in a world where people tend to refrain from killing each other, beating each other up, or stealing their stuff. And since I live in a world where other people also have brains and imagination, and they know too they themselves will be happier if people don't go around killing each other. So we make promises to each other, and — more importantly — enforce those promises with police and prisons, judges and jails, soldiers and the occasional nuclear bomb. Because I know that if we all make and keep certain promises we will all be better off, I have a good reason for making and keeping these promises myself: I will be happier and more satisfied.
But that's not morality, at least not as some people construe morality. Morality means doing what's "right" without regard to your own or anyone else's benefit. In fact, we know that we are acting morally only if our actions benefit no one. It just doesn't matter, for example, that women are people, with their own wants and needs, and we would all be better off — women and men alike — if they had all the freedoms, responsibilities, and benefits afforded men. The right thing to do is for women to be submissive and subservient to men regardless of the cost to men and women alike.
This is the morality that people like Vox Dei correctly argue is unavailable to atheists. It is the morality of acid thrown in a woman's face, the morality of faggots tortured and strung up on fence to die, children left by their parents to die of appendicitis. It's the morality of genocide, slavery, tyranny and oppression. Yes, that's a morality that as an atheist I'm proud to say does not apply in the least to me: you can be damn sure that I'm completely amoral.