Thanks, NatCh. That's pretty much what I thought.
I'm not sure of the point of the closed formats. Is it just their profits when selling books on their sites? Or do they get percentages when other book sites sell ebooks in those formats?
This is one area where I think the adoption of ebooks is held back. There're just not that many folks willing to give up the advantages of a physical book, which, imo, have less to do with their affection for dead tree pulp, and more to do with their ability to read a book when and where they choose. (Or to get rid of it, but I'm iffy on that.)
Maybe the solution - pricey though it is - is to buy one of those small tablet pcs. (A concession, considering how much I prefer my macs!)