Wow Facebook really are pissed about this. Not just because of this but they've complained about it loudly at several events, posted newspaper ads etc. It must

Wow Facebook really are pissed about this. Not just because of this but they've complained about it loudly at several events, posted newspaper ads etc. It must really hurt their tracking. I didn't expect that, after all the app already knows who you are considering you have to log into it. I assumed they would have plenty of ways to correlate activity on other websites and apps. The linking of the ID to other apps must give them a lot of info, much more than I expected. That means it's a really good thing. I hope Android will soon offer the same option.