Amazon tossed Boomerang out of the Select program because I couldn't get Apple to pull it from their store. Exclusivity and all that. So now Apple has it at $2.99 and Amazon does too, but they are discounting it to $0.99.
Anyway, since I was planning on a promo period right about now, but can't do it with Amazon, it looks like I will have to do it at Smashwords. Coupon code XS97U. Good through January 5.
The advantage of Smashwords? All formats/ereaders covered.