Bloomberg has more information on how Apple’s new iAd mobile advertising platform is working for brands. The company is mining its extensive data on people’s iTunes buying history for apps, music and movies, and allowing advertisers to target their ads at people based on their interests. iAds launched last week, and are appearing within apps for iPhone and iPod touch.Unilever’s Rob Candelino explains that this data backs up traditional demographic targeting like age and gender. “Apple then overlays that with the iTunes information and targets quite well and quite surgically,” he says. However, Apple has stressed that users can opt out from being targeted by their iTunes download history if they want to.