It is indeed peanuts. Consider Walmart's data warehouse, estimated by some to approach 500 terabytes. There, for example, the big-box titan analyzed what items appeared together on checkout lists and found a relationship between facial tissues and orange juice, thereafter positioning the two close in stores. To perform this type of mining requires massive amounts of transactional detail.

I would not be surprised if Apple used inventories of user's local contents to determine which content has legitimately DRM and which doesn't. Given its recent battles with the recording industry over pricing, this kind of knowledge could give it a bargaining chip..."Cut us a nickel off content cost and we'll consider sharing our strategic customer profiles."