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Mnikr - Digital Identity Management 2009


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This was my presentation to the Digital Identity Management workshop at the 2009 ACM Computer and Communications Security conference, in Chicago, IL. I delivered the presentation on November 13, 2009.

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Mnikr - Digital Identity Management 2009

  1. 1. Mnikr <ul><li>Reputation Construction Through Human Trading of Distributed Social Identities </li></ul>Brendan Francis O’Connor SET Corporation The Johns Hopkins University [email_address] Twitter: @USSJoin John Linwood Griffin The Johns Hopkins University [email_address] Twitter: @JLGTwit
  2. 2. We developed a system to coalesce people’s distributed social network personas from across the Internet, then buy and sell shares of people in a stock market to determine reputation.
  3. 3. You, too, can own your own person!
  4. 4. Why do we care about Reputation on the Internet?
  5. 5. Services (Twitter, YouTube, Digg)
  6. 6. Users (Me! Or you!)
  7. 7. Personas (USSJoin, 2Cool4U)
  8. 8. Identities (My Virtual Self)
  9. 9. Who are you (on the Internet)?
  10. 10. “You’re not your job.”
  11. 11. “ You’re not how much money you have in the bank.
  12. 12. “ You’re not the car you drive.”
  13. 13. “ You’re not the contents of your wallet.”
  14. 14. “ You are not your... khakis.”
  15. 15. So who am I?
  16. 16. Mnikr, Part I <ul><li>The Combining </li></ul>
  17. 17. XFN: A MicroFormat with MacroEffects
  18. 18. XFN
  19. 19. Identities USSJoin @ Twitter USSJoin @ Youtube USSJoin @ Digg USSJoin @ GitHub
  20. 20. Social Graph API
  21. 21. Caveat <ul><li>XFN data isn’t clean </li></ul><ul><ul><li>We have to make sure “me” relationships are bidirectional </li></ul></ul><ul><ul><ul><li>We find it acceptable to leave some Identities not fully combined </li></ul></ul></ul><ul><ul><li>Some people use it incorrectly for no readily apparent reason </li></ul></ul>
  22. 22. Mnikr, Part II <ul><li>The Trading </li></ul>
  23. 23. Other Reputation Systems <ul><li>PageRank (Google) </li></ul><ul><li>Windley et al and OpenPrivacy </li></ul><ul><ul><li>Attempting to strip context (e.g., eBay-ness) from context-sensitive reputation (e.g., eBay Feedback Score) </li></ul></ul>
  24. 24. Other Reputation Systems
  25. 25. Other Reputation Systems <ul><li>Accelerando , Charles Stross </li></ul><ul><ul><li>This gave us the idea for a reputation stock market </li></ul></ul>
  26. 26. Stock Markets
  27. 27. Big Ideas <ul><li>If you have cool friends, they can make you cool </li></ul><ul><ul><li>Like PageRank </li></ul></ul><ul><li>No one ultra-cool user can make you cool </li></ul><ul><li>Users have to be invested in the system to make others cool </li></ul><ul><ul><li>Prevents Sybil attack </li></ul></ul><ul><li>No Negative Commentary </li></ul>
  28. 28. The Sims Online Mafia
  29. 29. Reputation Math <ul><li>Every value starts at 1 </li></ul><ul><li>Every share purchase raises the value by 1 </li></ul><ul><li>Every share sale lowers the value by 1 </li></ul><ul><li>The purchase price is equal to the value </li></ul><ul><li>An Identity can only own 5 shares of another single Identity </li></ul>
  30. 30. Reputation Math <ul><li>Alice has a share value of 5 </li></ul><ul><ul><li>Bob buys one share, which costs him 5 </li></ul></ul><ul><ul><li>Alice now has a value of 6 </li></ul></ul><ul><ul><li>Bob now sells his share, which gives him 5 points back </li></ul></ul><ul><ul><li>Alice now has a value of 5 </li></ul></ul>
  31. 31. Dividend Math <ul><li>Dividends = (value * shares) / 20 </li></ul><ul><li>Personal Dividends = value / 5 </li></ul><ul><li>So if Alice owns 3 shares of Bob, whose value is 8, then Alice gets (3*8)/20 = 1 point </li></ul><ul><li>Bob also gets 1 point for his value of 8 </li></ul><ul><li>Dividends are run every 24 hours </li></ul>
  32. 32. Bootstrap
  33. 33. Mnikr: the Social Network
  34. 34. How Big Did It Get? Is 350,000 Big? Is 350,000 Big?
  35. 35. The Kings of Reputation Street Time Between Trades Highest-Valued Identities
  36. 36. Next Steps <ul><li>Mutual/Index Funds </li></ul><ul><li>Derivatives Trading (Short Selling) </li></ul><ul><li>Real Money </li></ul><ul><li>Majority Shareholder Action Control? </li></ul><ul><ul><li>Lee Konstantinou, Pop Apocalypse </li></ul></ul>
  37. 37. Conclusions <ul><li>Metcalfe’s Law Can Be Bent </li></ul><ul><ul><li>The value of a telecommunications network is not necessarily proportional to the square of the number of connected users of the system </li></ul></ul><ul><li>Stock Market Seems to Work for Reputation (Good People are Good) </li></ul>