It's nice to see that finally, Linux may have access to commercial ebooks! I have a Sony PRS-600 and was considering buying a Kobo Reader for my daughter (played with it in a Chapters store, I really like it, especially the black flavour).
I'd definitely buy ebooks if I could, but there is no way I am installing Windows or MacOS on any of my systems. BTW, I upgraded 3 of our machines to Ubuntu 10.04, it really makes a great desktop system, my 10 year old daughter loves it