the amazon bookstore uses DRM, but the kindle devices themselves works _very_ well with non DRM content.
the vast majority of the books that I use on my kindle are such non DRM content
you can even use the wispernet to get the non DRM content onto the kindle.
you can e-mail it to the kindle (at $0.15/MB) or download it via the built-in browser (for many data types with the default browser, for other types with user supplied modifications for the browser)
if you don't like the DRM that the amazon bookstore uses, buy your digital books elsewhere, but don't let that stop you from using the kindle devices
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