Both of my Twelfth Night novellas were accepted into the Smashwords Premium catalog, which means that they will eventually get distribution into all the major ebook stores. So far the only place (besides Smashwords itself, and obviously Amazon) where I have found my books is Barnes and Noble.
My Barnes and Noble page:
Go look at it and smile. I am. Even if my works aren’t for sale on the shelves of a physical B&N store, they’re there in the digital store!