I know about those entities, though--and I know that, in the case of private companies, they're probably going to share it (and we can make laws to that effect)

I know about those entities, though--and I know that, in the case of private companies, they're probably going to share it (and we can make laws to that effect). My original point is that those protections won't apply when just crawling through friends and acquaintances mentioning things. EDIT: For another example, consider "Thank God, my friend angersock had a car accident today but only scratched the bumper". That's something I don't want as public knowledge, and that my insurance provider could (theoretically) use to raise my rates.