That's not what I said, I said you're free to post any medical information about yourself on Facebook.
And many people do.
I had an acquaintance who'd post about their children making troubles and what the doctor prescribed they do (and when)
I'd get an update like "tonight we're going to try it with my legs up in the air so [...]" you can guess why
Some people here share their medical woes here as well (not of the baby making kind, luckily)
And by sharing it gets stored and in case of Facebook analyzed, obviously.
It's not hacking in the case of Facebook, it's just giving it away.
That's how I interpreted the poll anyway.
".45 ACP - because shooting twice is just silly" - JSOP, 2010 ----- You can never have too much ammo - unless you're swimming, or on fire. - JSOP, 2010 ----- When you pry the gun from my cold dead hands, be careful - the barrel will be very hot. - JSOP, 2013
So as zero trust is much more likely than infinite trust I can only guess that they mean:
0 <= trust < 1
1 <= trust < 2
2 <= trust < 3
3 <= trust < 4
4 <= trust < 5
So the numbers represent the (exclusive) upper bounds? Still confusing but < is twice as fast to type as <= in code.