Re: Palmpilot versions of books. Someone sensibly pointed out that http://www.peanutpress.com/ has all four Harper titles by me up for Palm, including Neverwhere and Smoke and Mirrors. And I ought to have known that -- I seem to remember posting a link from here a while ago when the books were bestsellers in their various categories. Do a search and you'll find them.
(By the way, "Apple", in the e-book expanded Smoke and Mirrors, is a very short story actually called "In the End".)