[yitosda]

"We've seen cases outside the UK, with some of our World Service sites where foreign governments have tried to [track which articles and videos you're looking at or selectively suppress individual pieces of content]."

Is there any more information about such instances or is that insider knowledge?

[basic1]

You don't have to look outside the UK for that.

[golem14]

Isn't this pretty much the definition of the "Great Firewall" ?