I was wondering about this the other day and thought someone here might know. How does one even determine if an ad blocker is running?
Edit: Clarification: Most ad blockers collapse the divs where ads would have appeared. That's the tell I use to detect ad blockers. There are other, more sophisticated techniques but this is easy and works a good % of the time.
If you have experience in this I would love to read about some of it as it sounds fascinating.