[Prestidigitweeze]

I feel silly talking about the details of software that neither of us has seen or used, but why assume that a meat-grinder plugin for multiple devices would work better than a single-purposed application (such as Acrobat)? There's a huge difference between UpSpin's painstakingly tailored conversions and the output of a plugin by an online store's software division. It seems likely Amazon's addressing the need to go outside their ecosystem to have your docs converted, not necessarily to do a better job.

Then again, I could be wrung. (Stop wringing me with your special torso-twisting bell.)

(By the way: Are you close to being finished proofreading The Chessmen of Mars?)