[Anarel]

The Kindle isn't CALLING home all your notes and highlights, they're not secretly collecting this information for nefarious purposes or doing secret work for the government.

It's for YOU, the customer. It's a service. They HAVE to know what books you have on your device, you did purchase it from them, after all, you can't expect them not to keep a record. Same thing goes with notes and highlights, they back up your notes and highlights so if something happens to your Kindle, you don't lose your notes (and your books!).

If you don't like some entity that is providing you a service has access to information like that, you might as well sell your computer and cancel your internet. Because whoever you buy that from knows where you are, how long you're on the computer, what sites you visit...... oh, and same thing with the phone and credit card companies, too.