Whenever I buy a book from Amazon, the first thing I do immediately after the purchase is strip the DRM and store a copy of the unprotected .mobi file. I'm concerned about Amazon's new announced ebook format that I'll lose the ability to do this. If and when that happens, I won't purchase anymore books from them.
I was always very religious about backing up my music purchases, and generally removing the DRM, but had never done so with eBooks.
Your comment (and this article) just inspired me to figure out how to do this, and backup all me eBooks in a DRM-free format. Turns out, it was pretty painless.
