economics of privacy
It seems to be clear that the access to personal data represents an important economic value, for instance by allowing to personalize advertising (cf. Google and Facebook).
It may be a good idea to in the discussion to have an economic & business perspective on this matter.
An interesting article on this topic:
Facebook’s delicate balance between revenue and privacy
By Derrick Harris May. 13, 2012, GigaOM
NYU Stern School of Business professor Arun Sundararajan : “I think the single biggest driver of risk for Facebook … comes down to ‘are they able to strike the right privacy balance?’,” he told me during a recent interview. It’s kind of a chicken-and-egg problem: Facebook has to use and monetize consumer data into ad revenues to justify its lofty valuation, Sundararajan explained, but if it goes too far and turns off users, it risks losing those very users whose data it relies upon.