seraphim...that was a good post. Except I'm not sure an atheist could deny another atheist, because neither believe in a god. And that is what atheism is. What else they may or may not believe in is besides the point.
There are atheists that believe in astrology, homeopathy, natural medicine etc. and others that don't. Both are still atheists if they don't believe in a god.
I hear what you are saying about some atheists being much broader in their non belief of anything without scientific evidence. But that is in addition to being an atheist. Not a varying degree of atheism....otherwise we could call christians atheists if it was by degree...because they don't believe in the other 30,000 possible gods, they only believe in one. They would predominantly be atheists by that definition.