I've always believed in the 80-20 rule. Selling software to people, you can only get it right for 80% of the people.
Barring the 20% of crazy religious people out there, as one of the 80%, understand that I really don't care enough about your shoes to misplace them even if I did work at the post office. There's not a conspiracy to keep Atheists barefoot (at least none I've heard of in our meetings). I really don't believe there any conspiracy to anger the atheists by delaying their packages (if there were it's would I guess be driven by the First National church of the Holy Postal Workers which isn't really my denomination).
I just don't get it. Maybe this is the 20% of atheists who feel like I'm oppressing you by believing in a higher power. I mean the shoe site does believe atheists should "come out" and find each other (http://www.atheistberlin.com/atheist/?we-dont-believe-in-any-god). Not a bad idea really. Although you should be careful. As a christian believe me when I tell you that when you get a group of like-minded people together and give them a little bit of time it's organize and BAM you've got a religion. I'm not an expert, but I don't think that's what you're going for. Although the little black dot as a symbol hasn't been used since Treasure Island (I don't think anyway).
And of course, the one joke that no one else thought of: "Who says Atheists have no soles??? They're shipped in from Germany!"