I think we can look to the online news industry for indicators of what this technology might mean for the book.

Newspapers are much more dialogic in nature than they used to be, with readers being invited to contribute to, and indeed sometimes direct, the news narrative - something unheard of a decade (or less) ago.

This invitation coupled with the fact that we're all writers, editors and publishers these days whether we like it or not, can lead readers/ users/produsers to see themselves as co-creators of news, or at least has them seeing themselves as part of the process, rather than as purely passive consumers.

Could a similar state of affairs arise in the world of the ebook?

Will texts, once digitised and therefore removed from the realm of the fixed, finished, unalterable printed page become more dialogic in nature? Will we see readers altering text, offering contributios, creating pictures and video clips?

Are we already seeing the beginnings of this in the form of books like "Sense Sensibility and Sea Monsters" and in the fact that some novels are now being released with video trailers?