It's free, today only, at Smashwords. And since I also honor All Saints Day (the day after Halloween), you can still get it free on that day, too. All device formats are supported there--Kindle, Sony, Nook, etc.
It's also up at Amazon, although not free (99 cents). I think you have to join Kindle Select or something to change the price to zero or something, and I'm still working out the details on that.
Barnes and Noble...It will be up there, too, but the site that produces the ebooks has technical difficulties, and since I believe B&N is based in New York, it may well be that Hurricane Sandy is causing them some problems. If you are a Nooker (why does that sound so...hmmm.....) and can't find the ebook for download, e-mail me and I'll see if I can make it available to you at a special price after Halloween.