It was reported Amazon Kindle book sales had passed up Amazon's hardcover sales recently. A story in Publishers Weekly reports e-book sales the past two months have equaled that of trade paperbacks. The comments posted seem to indicate these numbers may only reflect sales from publishing houses and not include sales from indie authors or self-published authors. Still it is a trend those of us who self-publish must pay attention to.
To see the specific numbers click on the link and you will go directly to article in question.