Can you post a link/self-citation to any 2012 post on that prototype, I couldn't find it.

Was this only on US data, or EU or worldwide? And when you say "ad data", do you mean like ADINT?

And when you infer "was on a plane" from spatiotemporal edges in the entity graph with an implied speed of >300 km/h and >200 km distance, does that only work if the individual social-media app itself is collecting real-time geolocation? So if you only access social media from the browser not the app, does that partially prevent this privacy exploit?