Ack.  I have to make the caveat that I often disagree with the atheist ethicist.  From just browsing the first entry, I think we might be on similar pages in this instance, though.

To be honest, I'm not a big fan of the ideas "good" and "evil."  I suppose I'm something of an ethical pragmatist.  I believe in functional and dysfunctional, egalitarian and discriminatory, etc.  When we start lumping things in the category "good," we are often presuming too much about the universality of goodness.  Most actions are good for some, bad for others in any number of different ways.

As far as atheism being a virtue... meh.  I've said all along that my atheism is a side effect of my naturalism, and it honestly doesn't "do" anything.