The majority of them do.. and there's no possible way you can argue that, if you would like to find out, simply pm a staff member that you don't have as a friend, i can assure you they will either ignore you or have friends only on

I am obviously aware that they might just be busy, but even on their iphone accounts, the majority will have friends only or ignore you.. it's also funny that everyone that "answered questions" before they were hired no longer do that ;)