As the article points out we already have such systems, like google's "safe browsing" that most people use without thinking about it.

As long as these things can easily be bypassed by someone who wants to do so, it's not so bad in principle.

Speaking of "in principle": in principle a government list is more accountable than a list from some private corporation.

I'm not advocating this vchip proposal, just pointing out more nuance than appears in most of these comments.