https://www.recode.net/2018/4/4/17199354/facebook-stop-sharing-data-outside-app

Facebook is aggressively cutting down on the amount of personal data third-party developers can collect from users as part of its response to Cambridge Analytica, the third-party data firm that collected personal information from as many as 87 million Facebook users without their permission.

On Wednesday, Facebook announced sweeping changes to many of its APIs — software plugins that allow outside businesses and developers to collect data directly from Facebook.