On Mon, Mar 23, 2015 at 4:38 PM, Cathal Garvey <cathalgarvey@cathalgarvey.me> wrote:
Firefox Hello, which might be to blame, is on-topic though; is that module even open source? Mozilla are really sinking fast (ahem, EME) as a thought-leading ideology hub, so it wouldn't surprise me to learn they were bundling closed-source-open-port-ware.

Hello is part of Firefox's codebase, so yes it's fully Open Source.
https://hg.mozilla.org/mozilla-central/file/bc85c479668a/browser/components/loop

Same goes for EME. The Firefox implementation is Open Source.