The Secular Web Library - The online library on Atheism, Agnosticism, and irreligiousness. This is one of the best sources on the internet when it comes to Atheism.
The Demand for Religion - A study on the demographics of Atheism by Wolfgang Jagodzinski (University of Cologne) and Andrew Greeley (University of Chicago and University of Arizona).
Why won't God heal amputees? - Why does God only heal things that could have gotten better by themselves anyway?