I don't use fb for all the obvious reasons but my daughter did. I'm not sure that having max security settings helps totally anyway. Not all that long ago she decided to have her account removed completely. Now she's removed all the apps on her iPhone because she's read somewhere that her general usage (internet, txt and calls) was being scanned.

She was suddenly being inundated with spam calls as well and has no idea why. It became so bad that she got a new number. I know she's always been careful with personal information.

I'm still so annoyed that gmail scans personal emails. Write someone an email that mentions a car for example and the next thing there are adds suggesting to buy this car or the other and they're all in my general area.

Your address book is mine: Many iPhone apps take your data
February 14, 2012 4:00 PM
Jennifer Van Grove
http://venturebeat.com/2012/02/14/iphone-address-book/

Twitter Admits Storing IPhone Contact Data
Keeps user's entire address book for 18 months if you use Find Friends feature
By Ben Camm-Jones
[my settings blocked a pop up window on this site - just letting you know if you don't have pop ups blocked]
http://www.csoonline.com/article/700...e-contact-data
Apps need to stop stealing contacts from phones
James Temple
Friday, February 17, 2012
San Francisco Chronicle
http://www.sfgate.com/cgi-bin/articl....DTL&type=tech

etc...