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Dec 13 2011 2:59pm EDT

How Much Facebook Knows About You

mark zuckerberg

When Austrian law student Max Schrems asked Facebook to send him all the data the company had collected about him, he wasn't sure what to expect. He got 1,222 pages of PDF files listing every thing he'd liked, every message he'd sent—even the ones he'd since deleted—and every poke he'd poked.

It's a scary amount of data, and Schrems has since started a campaign to bring more privacy to the social network. You can see the full story in the video below.


Get more business intelligence from Portfolio.com:

  • A Hashtag How-To: Why does everyone on Twitter use the pound sign all the time? Our marketing expert Shama Kabani explains.
  • Costume Designer Gets Mass Opportunity: Will fans of The Girl with the Dragon Tattoo dress like the star Lisbeth Salander when the movie debuts? Thanks to an enterprising costume designer’s deal with H&M, it's an option.
  • Happy IPO Holidays: Zynga and Jive Software illustrate different aspects of the social-media revolution. This week, they're among the headliners for what could be the biggest initial public offering roundup since 2007.


Nicola Kean is an assistant editor for Portfolio.com.

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