My primary use for my pda *is* to read ebooks.

I use an ipaq and mobi reader, with the font size about that of my index finger nail (I am 21). I find it easier to read then dead tree, except when in direct sun light.

Granted, I can only read about a sentence before "turning" the page, but it is something which one gets use to very quickly.

Personally I can't wait for these devices to be released, and hopefully with a developer friendly SDK.

Cheers,
Steve