To the best of my knowledge, Facebook doesn't listen to conversations, neither do other apps. They use other methods for Kafkaesque profiling.
— Wolfie Christl (@WolfieChristl) June 7, 2018
Anyway, FB has a patent on this (https://t.co/LreBI1xPNl) and that one by Amazon is remarkable: https://t.co/viVvRh5hha via @GiladRosner pic.twitter.com/aArlejRiNx