People You May Know can help people find friends on Facebook. People You May Know suggestions come from things like:
  • Having friends in common. This is the most common reason for suggestions.
  • Being in the same Facebook group or being tagged in the same photo.
  • Your networks (example: your school, university or work).
  • Contacts you’ve uploaded.

To add someone as a friend from People You May Know, you can send them a friend request.