Yes, they are fine for books with no features but body text and no important formatting or layout, and that the reader progresses through entirely linearly. Those are the sorts of books they’re best-suited to.
> Those are the sorts of books they’re best-suited to.
Which is 98% of novels. e-Readers are even great for books with lots of end notes or foot notes. It's great for flipping between those. I had no problem reading Infinite Jest, for example.
I guess if my copy of Pale Fire had hyperlinked all the poem line mentions, I would have been fine. :)
Now I'm wondering if I could write a quick script to annotate mine thusly...