Something dodgy going on here
I have read the article above and while Facebook may not be sharing the numbers from my Facebook contacts with anyone else they are still taking numbers from peoples phones either by a Facebook app on the phone or by other means. Looking at what i have seen with my own eyes, something dodgy is going on.
I understand that people fill in the info in their Facebook profile and if they allow their friends to see this it will show up in their friends contact list, I am not disputing that. What i saw in addition to thses numbers were numbers taken off my phone, numbers like 'Home', 'Dentist' and 'Doctors', numbers that i wouldn't of put on Facebook (Because there is no need to) and had obviously come off my phone. I was at no time made aware of this or asked for permission to do this from Facebook or any app. Then in addition to the two methods of numbers appearing in my contacts mentioned above, I also had loads of numbers from people i did not know who seemed to be friends of friends, some of which were children,
In my phones Facebook app there are three options in the settings, i take 'Contacts' in this context to mean contacts on my phone.
1 - Sync All (Sync data about all friends to contacts)
2 - Sync with existing contacts (Sync data only about friends already in contacts)
3 - Remove Facebook Data (Remove Facebook data from contacts. Use info about friends only in Facebook).
I have option 2 selected and i take this to mean that my phone can get data from Facebook to add further Facebook related data to contacts who are already on my phone and that is how it seems to have been working until i discovered phone data on Facebook, now i'm not so sure. Nowhere does it explain in which direction the data is syncing and nowhere have i seen anything to suggest that data will be taken from your phone and put into Facebook.
What concerns me more are the numbers that appeared in my Facebook contacts from people i don't know, some of which were children.