We've noted Stephen Maitzen's excellent work in philosophy of religion on another occasion, but I'd like to note that he has since written and posted some more nice papers. His most recent paper, "Ordinary Morality Implies Atheism" (European Journal for Philosophy of Religion 2 (2009): 107-126) can be found here. Links to most of his other papers can be found here.
Btw, some time soon, I'd like to get a discussion going on his novel argument in "Anselmian Atheism", Philosophy and Phenomenological Research Vol. LXX, No. 1 (January 2005), pp. 225-239.