So many people...
So much information...
All the property of Face Book.
All run by...?
Who is watching what you do, who you communicate with, your private messages?
Those who are legible for Israeli citizenship (like the Face Book founder) have a habit of allowing Israel "back doors" for their software.
Robert Maxwell (Jan Ludwig Koch) made multi-millions selling such software, for defence and security agencies, to Communist and Arab countries and across America.
Do not think the Israeli secret services would not be interested!