https://www.facebook.com/notes/facebook-engineering/protecting-privacy-with-refe...

		meritt on July 9, 2014 \| parent \| context \| favorite \| on: Google Drive Found Leaking Private Data https://www.facebook.com/notes/facebook-engineering/protecti... Facebook Engineering's entry on various methods of hiding referrers. This was 4 years ago, so some of these techniques might not still work.

Wow, don't read the comments on that blog.