Okay, so I see that Circle of Seven productions has aligned with lexcycle in putting book trailers on Stanza. They still seem a little hard to find. I'm pretty sure the future of digital books includes something like the special features on a DVD - which would include not only trailers but videos - interviews with the author or even more interesting things. My first book is coming out internationally in November and will be on Stanza (Pilgrim in the Palace of Words - though I'm not here to sell it). It's a travel book and I have a whole series of video podcasts set for itunes.