There are epub readers for android, Windows, Linux, and the OS-X. If reading books on an LCD screen was a threat it would have already happened. There are millions of people who have a notebook or netbook with them every day. How many do you suppose read books on them? It won't hurt to have a cool looking ePub reader on the iPad, but if it's as hard to hold onto as my Archos 9 is the Kindle has nothing to worry about. For what it's worth, the Kindle is lighter and thinner than the ipad. Easier to hold on to.