For Barnes & Noble, the challenge will be to look beyond the device to position themselves against online vendors, self-publishing models that parallel music distribution and the increasing encroachment of retail titans. I'm a read who longs for spaces where readers can discover serendipitously ideas, authors and good reads - in both libraries and bookstores. However, both libraries and bookstores are in peril, especially as places for discovery, contemplation and learning. And the social web is no replacement.
Publishers face their own issues in terms of redefining their roles in the new publishing ecosystem which allows anyone to master publishing, writing and promotion. And, for authors themselves, taking on these tasks forces them into new relationships with readers but also with their creative works. If you are actively marketing yourself, it can't help but influence the development of your work.
I've mentioned some of my concerns, do you have some of your own to share?