It will be fascinating to see if big retailers (as distinct from booksellers) can further ebook adoption. I suspect they can and probably will, publishers should be hoping so anyway:

Sathianathan said it was a good time to join Tesco and lead its digital book service. “Technology is changing how people read,” he said. “Offering a digital book service is an example of what Tesco does best – focusing on the customer and anticipating their needs as the market evolves.”

via Sathianathan to head Tesco’s blinkboxbooks | The Bookseller.