Atheistic apologetics has a bigger problem than lack of money. It has a fertility problem. Atheists have fewer offspring to indoctrinate than religious people, not to mention the fact that they often claim they prefer not to indoctrinate even when they have the opportunity. After biological predisposition, parental orientation is the second most consequential influence on religious uptake. Where advertising dollars figure in, I don’t know. I doubt it has much sway.

Who cares? Who are they advertising to at this point? Literally the whole planet knows of Christianity Islam and Judaism. Let them waste their money.

This is one big reason I suggest uniting under an acceptable idea (like Brights.com) which can use donations much more effectively. Atheist won't do that, however, because they are terribly smart people. They've figured out the truth, after all.

We can't claim atheism on our taxes either