"Now they may not be allowed to actually go look at the page that you pulled over the Internet.

But if I know the size of the file that was transmitted across the Internet, which is also metadata I can uniquely fingerprint every single story on that news site.

And I can then correlate this news story to your address without ever going to the content in a legal sense."

- Edward Snowden writing for the Sydney Morning Herald http://www.smh.com.au/comment/they-know-when-youre-sleeping-they-know-when-youre-awake-20160526-gp4cei.html