It'll be interesting to see what happens in the near future. It seems like the Kindle could popularize the ebook, and I hope it does. Hopefully some sort of universal DRM standard or something will emerge so I don't have to worry about what might happen to my ebooks in the future. One good thing about reading on PDA's is that whenever I got a new one, all I had to do was install the appropriate reader software, and maybe authorize a new device, and I could still use Mobipocket and Ereader books that I've bought in the past.
But now that I've used an eInk reader for a bit, I don't think I could go back to a PDA for reading
