The latest news is that e-books are outselling physical books on Amazon in the UK.
http://www.bbc.co.uk/news/technology-19148146
http://www.guardian.co.uk/books/2012/aug/06/amazon-kindle-ebook-sales-overtake-print?newsfeed=true&utm_source=Publishers+Weekly%27s+PW+Daily&utm_campaign=c92a9bcda0-UA-15906914-1&utm_medium=email
http://www.bbc.co.uk/news/technology-19148146
http://www.guardian.co.uk/books/2012/aug/06/amazon-kindle-ebook-sales-overtake-print?newsfeed=true&utm_source=Publishers+Weekly%27s+PW+Daily&utm_campaign=c92a9bcda0-UA-15906914-1&utm_medium=email