There are other reasons why this is happening. A lot of my readers have friends with smart phones who refuse to try Mobipocket and one of the initial hurtles to getting them on board is price. Well, here's your opportunity to tell them to give it a try with one of the top 3 science fiction books on the site (the other two books in the top are from the same series).
Fans spreading the word have been a massive help to me and this sale is a way for me to make it easier for all my mobipocket and lulu non-DRM PDF readers to do just that. This week they can share the First Light Chronicles and Spinward Fringe series' with friends. I know I enjoy a series more when I can talk to someone else whose read it. That could be just a writer's thing, but I doubt it.
So, for better or worse, the book is on sale for one week! Tell your fellow fiction fans!