title: How does Facebook generate suggestions?
body: <p>Recently, I've received friend suggestions for my family members overseas - but here's the thing. I have no family members that use facebook, we share no common name, and we're not even on the same continent. In fact, I haven't communicated with them for over a decade.</p>
  
  <p>Yet Facebook knows about them and knows that they are probably a good suggestion. My question is from a data perspective, where does Facebook get this information?</p>
  
  <p>I'm not concerned about privacy, but rather the technical aspects involved. Is there a funky algorithm that makes it all work? Or is Facebook tapping into information about me that I have no idea about?</p>