This is a question I often think about.
Every time I hear of some institution getting hacked, I wonder how much more is known about me because of the breach.
You can go on the web and find out more about you than you know about yourself.
But the one thing I keep hearing is that the info is not always right and can actually be damaging.
The net is not the most accurate source of information.
Read and believe with a couple grains of salt!