> the PM said they were going to 'block sites' related to extremeism. This isn't a 'filter', which implies it's something automated that affects all internet ac

> the PM said they were going to 'block sites' related to extremeism. This isn't a 'filter', which implies it's something automated that affects all internet activity. That sounds very much like the the Internet Watch Foundation's filter list, which was originally implemented to block access to child abuse. (http://en.wikipedia.org/wiki/Cleanfeed_(content_blocking_system) http://en.wikipedia.org/wiki/Cleanfeed_(content_blocking_sys...) There has been at least one case of that list accidentally blocking access to Wikipedia after an over-zealous block took out the entire domain instead of a single page, and there's no reason to believe that it couldn't be used to block far more content if the political will were there.