On: Facebook Is Giving Advertisers Access To Your Shad...

[lancesells]

As someone that has created a facebook account with an unused email without using my name or any information they still recommend my friends, family and interests. Instagram did the same thing with my interests.

There's a lot more going on than linking email addresses.

[cmroanirgo → lancesells]

If you used an app (rather than just a website), then all your contacts were uploaded. (Instagram has always been an app, hasn't it?)