actually the Pandigital was estimated to be number 2 only for the third quater of 2010 not for total yearly sales and even then these numbers are all estimations since neither Amazon nor Barnes and Noble release hard sales figures.
You do also have to take into account the Nook color was realeased at the very tail end of the 3rd Quarter of 2010 as well.
The sales figures for Amazon are for it's worldwide sales and Pandigital and BN are only US only, so you can take that for what it's worth in terms of the size of market share for Amazon vs the rest.
Be interesting to have a solid numbers for the US only between the kindle and the nook, I'm willing to bet it's much closer than people think.
but at any rate, any success of the Pandigital is a boost to Barnes and Noble ebook sales, since Barnes and Noble's ebookstore is the Pandigital's bookstore platform.
http://www.teleread.com/ebooks/pandi...es-for-3q2010/
http://www.idc.com/about/viewpressre...d=prUS22660011