The influence of social networks on people's communication and privacy

How many contacts do you have on Facebook? (if you do not use it, write 0)

  1. 200
  2. 400
  3. 278
  4. i only maintain academic relationships with all of them.
  5. ~500
  6. 125
  7. about400
  8. 416
  9. .
  10. 133