in Communication Ethics
Here's something from Slashdot I ought to work into my Privacy chapter to further drive home the point that privacy invasions, no matter how harmless they seem, can cause real economic damage to you:
Privacy appears to be declining largely in order to facilitate differential pricing... The thesis of this paper is that what really motivates commercial organizations... is the growing incentive to price discriminate, coupled with the increasing ability to price discriminate.... Privacy intrusions serve to provide the information that allows sellers to determine buyers' willingness to pay....
There is no easy solution to the conflict between sellers' incentives to price discriminate and buyers' resistence to such measures.
(Mistakes mine, as I had to type that out by hand.) Privacy intrusions are rapidly ceasing to be abstract.