I do not like Amazon's DRM encumbered walled garden though, especially the fact that it doesn't acknowledge anything not bought through Amazon as "books". In general the software and online service, with the exception of Whispernet, is shit.
My next eReader will definitely be something neutral, like a Kobo, and I'll just un-DRM stuff from Amazon via Calibre.
I have a Kindle and this is patently not true. I have multiple DRM-free .mobi "books" that I have sideloaded. You don't even need a cable; just add the book as an attachment and email it direct to your kindle (username@free.kindle.com) and it gets synced over WiFi.
At least the Apple iTunes ecosystem acknowledges my mp3's as music and generally as first class citizens for everything but iCloud.
What Amazon does is childish and annoying.
Calibre can't properly integrate with Amazon's proprietary ecosystem, so you're stuck with 2 separate ways of managing your books, and a are pretty much encouraged to rip out the DRM. (Okay, so I would have done the latter anyway without the encouragement.)
And then you still have a reader that says "na na na na na, those aren't really books!"
Pathetic.
Nice reader though.
wife bought a kindleDX to replace the mountain of books and huge withe papwr pdfs she have to read.
kindle will refuse pretty much all files for one reason or another. and none of the books are available in the amazon walled garden.
unfortunatelly we missed the return date. worst misleading purchase ever.
kindles are only good for people reading novels.