

Here is where it gets a little worrying: this list includes the phone numbers of your friends who are not on Facebook.
LOOK UP NUMBER ON FACEBOOK HOW TO
On the Remove page, Facebook says, "Before you click Remove, you need to make sure syncing is switched off" and gives instructions on how to find syncing on your smartphone.

If you want to stop this from happening, click on Remove Imported Contacts (again, you must be logged in to Facebook). In other words, you agreed to upload information on your phone to Facebook and your friends have done the same, so they can see your number(s) and you can see theirs. Please make sure your friends are comfortable with any use you make of their information. If you enable this feature, all contacts from your device (name, email address, phone number) will be sent to Facebook and be subject to Facebook's Privacy Policy, and your friends profile photos and other info from Facebook will be added to your iPhone address book. Just like on your phone, only you can see these numbers." The phone numbers listed there were either added by your friends themselves and made visible to you, or you have previously synced your phone contacts with Facebook. "Our Contacts list, formerly called Phonebook, has existed for a long time. "Rumors claiming that your phone contacts are visible to everyone on Facebook are false," a Facebook spokespers said in a statement.

Palo Alto has essentially aggregated the numbers that all your friends have shared with you into a list: you can see the individual numbers as well by going to each of your friends' profiles. You can see this list yourself by clicking on Facebook Phonebook (you must be logged in to Facebook). This is a little over the top, but it did freak out a lot of people who weren't aware Facebook had their number, and that they could see all their friends' numbers too. Please repost this on your Status, so your friends can remove their numbers and thus prevent abuse if they do not want them published." Then go to the right hand side and click on "visit page" to remove this display option. Friends! "ALL THE PHONE NUMBERS IN YOUR PHONE are now PUBLISHED on Facebook! Go to the top right of the screen, click on Account, then click on Edit Friends, go left on the screen and click on Contacts.
