For those interested in the discussion, there were other threads on this in the past week: [1] "ACLU exposes Facebook, Twitter for selling surveillance company

For those interested in the discussion, there were other threads on this in the past week: [1] "ACLU exposes Facebook, Twitter for selling surveillance company user data" -- https://news.ycombinator.com/item?id=12688548 https://news.ycombinator.com/item?id=12688548 [2] "US startup Geofeedia 'allowed police to track protesters'" -- https://news.ycombinator.com/item?id=12693732 https://news.ycombinator.com/item?id=12693732