I must comment on Kindle Content is licensed, not sold, to you by the Content Provider. This is, in fact, no different from a book or movie you purchase from a store. The "content" is licensed to you, not sold. What is sold is the medium but the content is restricted, i.e. copyrighted.
It appears that you are trying to create concern where none really exists. If I buy a book from a "physical" store such as Barnes & Noble and I pay for it with my credit card, Barnes & Noble could keep track of which books I've bought (especially if I have a gift card) and then let me know of books that map to my previous purchases. That is no different than eBooks. The only real way to go "off the grid" is to pay with cash and, well, who carries that much cash around (considering the cost of books today and the number I generally BUY).
When I was a child (back in the days of Ben Hur), my parents would purchase items from a store and inside was a warranty card and the warranty card asked questions about my parents, the family, income, interests, etc. that had nothing to do with the warranty (BTW, you don't have to fill those out to get the warranty - just keep your receipts). The data was collected and put into data warehouses for future mailings. Today, that has gone electronic and data collection spans nearly every aspect of our electronic experience. You can, of course, turn much of that off; however, many sites won't work unless, for example, cookies are activated. I'm OK with that. I surf using "private browsing" and delete all cookies when I close Firefox. And when I check various web sites that "claim" to know all about me - much of it is dated or just plain wrong. When sites track my IP address, they don't return where I live but where my ISP is. And public records have always been public.
So, there are things to worry about in this world (like location-based services) and then there are things where getting upset or worried is just going to get you upset or worried. Making a big deal out of books is, IMHO, not a big deal.
Dr. Nicholas Shaw
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