From my limited experience of Fox News (it’s hard to stand for too long), this seems like a great idea, if it was technically likely to work. FOX Blocker filters out FOX News when you put it inline on your cable input. It’s just a notch filter for a certain frequency, so it’s only going to work with analogue input and only if the frequency is the same. But I don’t suppose that’s the point – the fact of buying it (and getting your name added to an email to the top 10 advertisers on FOX News, to let them know that you’ve opted out of seeing it) is the point. They say openly that they’re a for-profit business but that they will do the right thing and pass on any profit to anti-FOX News sites.