Actually, the email only indicates that they intended it to be opt-in at some point. I don't remember whether they actually did implement that prompt for call r

Actually, the email only indicates that they intended it to be opt-in at some point. I don't remember whether they actually did implement that prompt for call records - and it certainly seemed like a surprise to everyone when it was discovered that they were doing that. Do you think that would be the case if people had knowingly gave permission for facebook to upload all that data?