I wouldn't put it above Zuckerberg himself to do it.
http://www.theweek.co.uk/facebook/14625/are-users-dumb-fucks...
From that article:
During the conversation, Zuckerberg writes: "Yeah so if you ever need info about anyone at Harvard, just ask. I have over 4,000 emails, pictures, addresses, SNS."
When the friend asks him how he got the information, Zuckerberg replies: "People just submitted it. I don't know why. They 'trust me'. Dumb fucks."