Apple tries to stop developers sharing user data

Bloomberg: Apple Inc. changed its App Store rules last week to limit how developers use information about iPhone owners' friends and other contacts, quietly closing a loophole that let app makers store and share data without many people's consent. The move cracks down on a practice that's been employed for years. Developers ask users for access to their phone contacts, then use it for marketing and sometimes share or sell the information -- without permission from the other people listed on thos...