The worst ebook feature is that the Kindle only stores max(last_read_page, current_page). This means that if you follow a footnote to the end of the book, your reading position is lost forever. This makes flipping through the book a mentally-expensive proposition. (The screen refresh also makes this impossible.)
I'm a big ebook fan, but only for novels or books that read like them. (Which is 90% of the reading I do, so still a big win.)
Yes, and it has a full stack too, so you can, for example, look up the dictionary definition of a word in a footnote, and then follow another link in that definition, etc., and then, when you're done, just repeatedly go 'Back'.
Did that on pg's Hackers & Painters. Back key works just as expected for me. It's like a stack - you can pop significant transitions from it, like following a reference or leaving the book.
I'm a big ebook fan, but only for novels or books that read like them. (Which is 90% of the reading I do, so still a big win.)