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On Social Networks, You Are Who You Know

santosh maharshi writes "On social networks like Facebook, even if you have kept your profile very private, people can just look at your friends list and infer lots of vital information about you. Most of the social networks like Facebook and LinkedIn allow people to see your picture and your friends list as part of the open access for visitors (the article says that only 5% of Facebook users have bothered to hide their friends list). In a study titled You Are Who You Know: Inferring User Profiles in Online Social Networks (PDF), conducted by Alan Mislove of Northeastern University and his colleagues at the Max Planck Institute for Software Systems, an algorithm was tested that can accurately infer the personal attributes of Facebook users simply by looking at their friend lists. 'At Rice [University], the algorithm accurately predicted the correct dormitory, graduation year, and area of study for the many of the students. In fact, among these undergraduates, researchers found that “with as little as 20 percent of the users providing attributes we can often infer the attributes for the remaining users with over 80 percent accuracy."'"

8 of 171 comments (clear)

  1. What about slashdot? by Mantis8 · · Score: 2, Funny

    No wonder so many slashdotters post as anonymous cowards!

  2. Re:You have friends by Rhaban · · Score: 4, Funny

    Guess I'm nobody, since I have no facebook account LOL

    You are nobody, not because you don't have a facebook account but because you just ended a sentence with an all-caps 'lol'.

  3. Blinding revelation by oldhack · · Score: 2, Funny

    Stereotypes work.

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    Fuck systemd. Fuck Redhat. Fuck Soylent, too. Wait, scratch the last one.
  4. What happens in Vegas, stays on facebook by shambler.com · · Score: 5, Funny

    What happens in Vegas, stays on facebook

    1. Re:What happens in Vegas, stays on facebook by nobodylocalhost · · Score: 2, Funny

      That's when you face punch the ass who tagged you, since you can find out who they are and where they live from facebook via the algorithm in TFA.

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      Where is the "Ignorant" mod tag?
  5. Re:You have friends by Ethanol-fueled · · Score: 3, Funny

    LOL

    He's probably on MySpace instead.

  6. Re:i'm not on facebook by Anonymous Coward · · Score: 1, Funny

    Damn dude, you're pretty depressing. Got a Livejournal account?

  7. Re:You have friends by raddan · · Score: 3, Funny

    Why, they should end their sentences with lowercase lols, like you?

    My wife thought for the longest time that "LOL" meant "lots of love". I asked her one day why she signed an email "LOL, your wife". I mean, I know I'm lame but "LOL, your wife"?!!!