[morganvachon]

A similar instance on my part: I started working at a new job last year, but didn't add that information to my Facebook account or any other online account (even LinkedIn, which I trust even less than FB). Within a week all of my new coworkers started showing up as suggested friends.

Now here's the fun part: My government job has a strict electronic device security policy, and employees are forbidden from carrying cellphones, smart watches, and any other connected devices into the building; I have to leave my phone in the car. So, how does Facebook know that I have new connections with these people? The only thing I can think of is that each of them looked me up on the site after meeting me. Another more insidious thought is that Facebook is using GPS location data to see where I go every morning and depart from every evening and is assuming that it's my new job (Google did this in the past when I had an Android phone and had Google Now enabled, it figured out on its own where my last new job was, but that was a documented "feature").

Either way, Facebook now knows where I work even though I deliberately chose not to tell them.

[zippergz]

> The only thing I can think of is that each of them looked me up on the site after meeting me.

No. One or two looked you up, and they're connected to all of the others. That's how this works.