i published a corrected version of spyder's rebellion to nook (epub format).
while i'm at it, let me say this about e-readers. i've been using the kindle for the better part of a year. i do use it and even like it. for one thing, my house is filled to the point of collapse with books. but i do have some problems with it. first, i would say the idea of a mechanical - as opposed to a touch-screen - device, is over, or getting there. that makes me wish i'd gone nook or ipad. the process of getting the cursor to the spot you want to highlight, for example, is just obviously ridiculous.
what isn't sufficient in e-readers yet is, first, that you can't leaf through the book (maybe you can on an ipad?). the kindle's 'location' system is incomprehensible, and you often have to page slowly through whole big sections of a book to find the passage you want. you need processor speed and a dial on the edge where you can just roll through the text. and then there is page numbering: it makes the kindle (and i think the nook too) not fully functional for scholarship, as well as making it ridiculously difficult to find a passage you want. there has to be a system of systematic page numbering - one would hope, corresponding to the printed version - in all e-books, so i can for one thing, do references.
in short, judging by the kindle, i don't think the e-book is there yet.