I’m not sure how informative Investigating Atheism is just yet.
At first glance, it does look objective, if not very thorough.
The website has been put together by a group of academics and researchers at the faculty of Divinity at the University of Cambridge, and at the University of Oxford. The team have no set view on the subject, and aim to give a fully independent, but informed statement about this important subject.
(Thanks to Cade for the link!)