Since I am NOT all that techno savy.... I have to ask...does the Kindle hook up to your computer say like via a USB cord?
Is the electronic version of book in the same format as say if you wanted to read a book on your regular desk top computer?
Is there a back door way to take the e-book off your Kindle or copy it to your desk top....or to a DVD data disk?
I would be ticked if I bought an e-book and then the next time I went to hook the whole sha-bang to the internet, all my other e-Books went POOF!

I'd be expecting a refund from Amazon, and I am thinking there are enough Amazon Kindle users out there that they could definitely leverage the threat of a class action lawsuit into making Amazon cough up the dough.
The format of the e-book is proprietary to Kindle, but they have a free downloadable reader for a PC and seem for MAC...they say
The Kindle does connect to a PC using an USB port and you can "backup" your e-documents. You don't have to keep all you have on the Kindle. You can manage them as a PC file.
Amazon does keep track of what you bought, so you can lose your Kindle and your backups and retrieve everything, assuming it hasn't been "recalled".
There is 3rd party software available that allows you to better manage your Kindle on the PC side.
The latest version of the Kindle software will read PDF files and you could convert them to Kindle format if you wanted Kindle pagination features for it.
You can load your text files to your kindle by sending them to an email address you are provided with and they will be converted an for free.
I think that covered it all?