I did the Mobipocket upgrade to my Iliad this afternon, and it's great. When I bought it last Summer, all I wanted to do was buy and read books on it. The display is crisp and clean, and it's quite a relief to purchase commercial books rather than reread Sherlock Holmes ad infinitum...
An added plus was that I had books in my Mobipocket account from previous Treo and Ipaq purchases - so all I had to do was re-download them. They'd been in my online bookshelf for years and I'd totally forgotten about them. Kudos to Mobipocket for keeping those records and purchases available.
Better late than never - the Iliad has now become fun.
Larry Z.