Suddenly lots of people are waking up and asking themselves questions about Facebook. How much data am I sharing with the social media giant? Did I really give permission for it to be collected and stored? And, even more seriously, have I handed over my friends' data to be stored on some Californian server? I am one of those people and what I've discovered has left me somewhat shocked. Over the weekend I got hold of my Facebook data. It's easy enough, you go to settings, then general account settings and click on download my data. An hour or so...