I recently spent a week out of any mobile signal range and when I got back, I had email from FB (normally I don't get notifications by email, just in the app) f

I recently spent a week out of any mobile signal range and when I got back, I had email from FB (normally I don't get notifications by email, just in the app) for the most banal things like "Friend X has just uploaded a photo!". FB definitely enters panic mode if a regular user doesn't use it for a short while.