You might not like that companies are trying to either discourage ad blocking or serve ads regardless, but at least they're getting creative about it. Netflix is promoting its bleak drama Black Mirror by serving special ads just to people spotted using ad blocking software. "You cannot see the ad. But the ad can see you," Mashable saw in one example. The ad is certainly consistent with Black Mirror's notion of technological breakthroughs gone wrong, but it may come as a surprise if you'd installed a blocker precisely to avoid this kind of media blitz.