Another $0.02 worth here.

I have been reading ebooks in various formats for several years, starting with my palm m500, then my palm TX and now my iPhone. The e-ink and larger size of the dedicated readers is offset by the portability and built in "light" of the more general purpose PDAs. With the PDA /iPhone I always have my books with me and can read anytime I have a few minutes to kill. I can't see carrying something the size of a kindle around like that. I also tend to read later in the day and carrying around a book light in addition to the reader would be more likely to reduce my usage.

- Eric