More n the end of Sony’s eReading efforts in the US and it’s impact of Smashword, which in the very words of Mark Coker makes clear why this, although notable, is not that huge a deal:

Sony’s devices and ebook store predated Amazon’s, so when the history books of the indie author revolution are written I hope historians give Sony the credit they deserve as a true pioneer.  My sentiments and appreciation for Sony and their awesome people aside, the impact on Smashwords authors today will be minimal.  The Sony store, as most authors know, is one of the smaller retailers in the Smashwords distribution network.  To put this in perspective, on a typical month, less than 2% of our authors’ monthly sales come from Sony.

via Smashwords: Farewell Sony Reader Store.