I have religious friends, and atheist friends, and they both disagree with me on one point: my claim that I am not an atheist. My religious friends note that I lack a belief in God, and therefore I am not with them. My atheist friends note the same thing and presume that I am with them. Now, I have argued my case for being neither before, but what I noticed in the course of replying is that the definition of atheism has shifted recently, and what seems to be going on is that we have duelling definitions.

via Definitions of atheism « Evolving Thoughts.