Goodreads + Amazon: Winners and losers

I decided to wait a few days before writing about Amazon's acquisition of Goodreads. I wanted to let the dust settle before weighing in with my own opinion. Now that I've had some time to mull it over, here's what I think: This has the potential to be a game-changer that could be the next, and possibly final, nail in the coffins of other ebook retailers...but only if Amazon actually does something with the Goodreads platform.