Key points: https://twitter.com/YBenkler/status/1070337233159372806?s=20...
Here was one thread of highlights which is still somewhat readable: https://web.archive.org/web/20181206132832/https://twitter.c...
Germany banned their cross-site data sharing/reciprocity, such as from menstrual cycle-tracking apps which had come to light (maybe separately), in 2019: https://twitter.com/YBenkler/status/1093495901342126080?s=20...