I think Facebook is the most evidently intrusive. They monitor all of your online activity pretty much and then shape your thoughts and such with targeted advertising.
If you're that easy to manipulate and a few ads can shape your "thoughts" even billboards are dangerous for you.
The problem might not be the website, but the user behind monitor.
The Internet knows where your cat lives. Using the hidden meta-data about the geographic location of where the photo was taken which we share when we publish photos of our cats on sites like Instagram and other social media networks.
And? If it ever gets lost, that might be helpful when you need to find it.
Of all the large companies that are now large internet players, do anyone particularly scare you in terms of how you data and track could be used? Amazon, Facebook, Twitter,
?
None. And, what can they do with that data? They can print it and wipe their........
Sometime people get paranoid. FB has my data....what can they do with it?