From an article in The Independent:
I'm not against e-books in principle – I'm tempted by the Kindle – but the more they become interactive and linked, the more they multitask and offer a hundred different functions, the less they will be able to preserve the aspects of the book that we actually need. An e-book reader that does a lot will not, in the end, be a book. The object needs to remain dull so the words – offering you the most electric sensation of all: insight into another person's internal life - can sing.
I'm inclined to agree. If only the publishers weren't demanding so much money for them (as I'm still running into quite a few books cheaper in dead-tree than electronic version).