I started by taking a look at the Contact Info section. Incredibly, five of the first six contacts on the list were not my Facebook friends. Yet I had their names and phone numbers right there in my contacts. The name at the top of the list was someone I only met and communicated with, completely outside Facebook, for the first time last week. My contact with that person was via email on various devices and over the phone from my iPhone.
…When I called the first person on the list, they were surprised I had access to that information as, even though they had put their phone number into Facebook, they had only elected to share it with friends.
When I looked at their profile on Facebook, their phone number was hidden from me. Yet, it was available through my archived history. In fact, when that person checked, he had locked his account down so that the number wasn’t even available to his friends.