The browsers all already have a centralized, real-time censorship registry. It's called "Safe Browsing" and run by Google and is used to block "malicious softwa

The browsers all already have a centralized, real-time censorship registry. It's called "Safe Browsing" and run by Google and is used to block "malicious software". Everyone (incl Safari and Mozilla) uses it. It's got something like five billion clients. Occasionally, there are false positives and you hear people screaming about it on HN because their personal site is now a giant red malware warning in 99.9% of browsers. Google AFAIK has not yet been compelled to use it to censor at the behest of the state. It has existed now for many years.