The only reason that I haven't yet downloaded any of them is the fact that I have not fancied any of the hardware available to read them on. Sitting at the computer to read a book doesn't appeal to me, nor does balancing a laptop. PDA's are handy, but the screen are dinky.
But now it seems that the E-Ink technology has finally gotten to the point that a reader has been created that is as comfortable to read as a book. I have been reading about it on various sites, but here is a link to a great article on PCWorld.com:
It looks like Sony will have an American version of their reader on the market in April or May of this year! It's about the size of a paperback book, but thinner. The E-Ink technology is easy on the eyes, can be read in bright outdoor light as well as in darkness, and the reader has a long battery life. The price is supposed to be about $300 or $400.
I am looking forward to getting my hands on one of these readers. Not only will I be able to comfortably access e-books, but it will save me stuffing fat paperback books in by fanny pack when I go out. An added plus--I will be able to have a number of books stored on it so I can read what I'm in the mood for at a given time.