The thing you fail to remember, Jon, is that atheism is a belief. From your Wiki link, a position that affirms the non-existance of God DOES NOT need supporting empirical evidence.
Subjective confirmation of non-existance can be had, but it is no more compelling than the theist version of the same.
I highly doubt that an atheist on this board would offer the kind of 'evidence' a theist would for their position. Let us examine:
There is a God because I speak to Him.
There is no God because I don't speak to Him.
There is a God because I have been blessed in life.
There is no God because I have been cursed in life.
There is a God because life makes more sense when you view the world from a theological/dualist perspective.
There is no God because life makes more sense when you view the world from a physical/scientific perpective.
I can feel the presence of God, therefore He is.
I can not feel the presence of God, therefore He is not.
There is ancient literature supporting my position.
There is modern science supporting my position.
All of these are subjective 'proofs', and the most you can really hope for is that some atheist would step up and discuss some of those things which helped them confirm in their mind the non-existance of God subjectively[/i]. Most folks here I think are too honest to present that sort of thing, but then it is a nonchalance which is affected after-all, on a par with the theist who just believes in a God without thought for evidence.