GroupOn ads get through the block popups preference. They pop up EVERY DAMNED TIME I link within National Review.Story to story, internal and external. They litter my computer and aggravate me. I'm not subscribed, asked to be unsubscribed, was told I'm not subscribed, told National Review about it.
This ad sequence is like a roach and I hate it.
Mac laptop a home; PC desktop at work same result.