[ATDrake]

The only decent use there is for Topaz, imho, is for using the embeddable-font property (or whatever it actually does) to put foreign language books written in a non-Roman/Greek script on the Kindle without having to resort to installing font hacks/trying to read squinty-sized PDFs.

Unfortunately, while the format's been cracked so you can take apart and convert a Topaz book to something else, no one has yet written tools to *make* a Topaz book, which I'd actually kind of like.