Zuckerberg also addressed steps Facebook is taking to improve user privacy as it continues to grow .

Heres a sample of the letterFacebooks current privacy model revolves around networks communities for your school, your company or your region. This worked well when Facebook was mostly used by students, since it made sense that a student might want to share content with their fellow students.Over time people also asked us to add networks for companies and regions as well. Today we even have networks for some entire countries, like India and China.