I think one day the ereader market will also be rolled up from the mobile sector. As the mobile will evolve into an all-purpose-mobile-electronic-device. I think however that to function as a reader you need a eInk or comparable technology. And right now eInk isn't up to be usefull in a mobile device. Once it reaches say 250ms refresh times, one could build a mobile with eInk which also works nicely as eReader but until then: iLiad