Over the past few days I've been evaluating the Kobo platform for publishing, and it looks like it'll be a good option. Unfortunately I can't make Determination available there. They have a minimum price point of $1.99, and require that if you sell a book through them, you not sell it for less elsewhere. The only way I could get Determination on the Kobo platform would be to raise the price, which I'm not willing to do.
Later on when I get longer books up, that won't be a problem and I'll see about making them available on Kobo as well.
In the meantime, there IS a free epub version available right here, so Kobo reader users aren't missing out!