Despite the old saying;
Never judge a book by its cover
Everybody in the publishing industry seems to agree that readers do judge books by their covers. I’ve heard some writers state that a great cover is just as important as great content, and I know of one writer who hit the number one spot in his category (and retained it) who claims it was all down to the cover art.
As a writer, I like think it should come down to a clever or interesting title and a good product description, but I can’t deny the importance of covers, even if I’d like to.
I’m very happy with the cover for d.evolution. I was lucky enough to find a great image that was exactly what I wanted, and it was available under a creative commons license.