I run a small business in a small religious town, and I'm sure that if my atheism ever became common knowledge then I'd lose almost all my business. I'm not too certain I wouldn't have a rock or two thrown through my windows or my car or truck vandalized. So while I've not been discriminated against, I don't advertise it either.
Christian apologetics is the art of rolling a dog turd in sugar and selling it as a donut.