I was meeting with a client the other day. One of the people in the meeting had deleted his Facebook account because he swore that the list of "Friend Suggestions" was coming from his email list. Facebook had hacked his Outlook phonebook!
I explained that Facebook uses his existing friends to suggest people he might know. By looking at friends of his friends, it's able to identify others he might know.
"Oh!" he said.
Duh!
Paranoia and conspiracy theories always amuse me!
