As of iOS 6 Apple is gradually changing the rules for in-app advertising, forcing developers to replace the older Universal Device Identifier (UDID) tracking with a new “Advertising Identifier.” The added bonus to this approach is that iOS 6 users now have the option of opting out of tracking for targeted ads, however Apple has made this feature less than obvious, hiding it away at the bottom of the About screen in the iOS 6 Settings…
