The social network's new quirk allows its mobile app to turn on your smartphone's microphone, listen in on what's around you. Facebook identifies the music or TV shows it hears, and can tell the world you're currently "Listening to Iggy Azalea" if it hears you bumping "Fancy."
The opt-in feature has many users creeped out. More than half a million have flocked to sign a sumofus.com petition to have the new gimmick axed from the app.
Listen in HERE!