Spontaneous Musings

If you go to the "manage your Kindle" page on Amazon.com, you can delete things for good, actually. Go to "my account" and on the right of that page, there's a "manage your Kindle" button which shows you everything in your Kindle library. If you go to the library, each item has a little button that says "Actions" one of which is "delete from library" - that permanently erases all record of the book in question from your library/Kindle etc. (If you want to read it again, you have to buy it again, so it's not archived anywhere.)