I've been made aware that apps - such as Viber, WhatsApp, Facebook, LinkedIn etc download the entire Address Book. That's how they know who we are connected to. My question is, when they download my address book, what do they get? Just names and email addresses with telephone numbers -- or do they also get the NOTES section. It's just that, I'm sure, there are lots of people who are unaware of this risk, and put confidential information in the NOTES section. Hence, do these App companies even download the NOTES?