No kidding! I won't go into any details as to why, but I was once able to find someone's full name, address, and home phone number by doing a few hours of research on the internet. The only information I had to go off of was her first name, her age, the state she lived in, and some of her interests. I have replicated the same thing with a couple of people here on ********, just for kicks. (I never do anything with the information and don't save it.)
It is scary how easy it is to find someone's identity if you trove through a bunch of little details and piece them together. Be careful with what you share online.