When I first uploaded the Hidden Witness to Kindle, Amazon was happy to accept it in almost any format.
Not any more. They've gotten a lot pickier. MS-Word, thankyewveddymuch, and there are a number of formatting "guidelines".
That'd be OK, I guess, if I wrote using Word. But I don't. So I have to spend a few hours reformatting and shit like that there.
Yeah, I know: First World Problems.