Originally Posted by Steve Jordan
Kindles can also read Mobi files directly, as well as Word DOC and PDF, according to their website
Yes, I've actually already installed a number of non-DRM'ed Mobi books (Treasure Island, a couple of Tom Swifts, and something else). But that's the point: non-DRM. Anything I purchas directly from Mobi is non-readable by the Kindle (assuming that purchase == DRM, but that's not always the case, like with Baen, where you still need to buy the books, but they're apparently non-DRM).