KDP Select – Good Idea or Not?

I just saw Amazon's new program for authors and publishers. If you haven't seen it yet, it's here.

My first reaction was, uh… no thanks. Why? Because Amazon wants me to grant them exclusive rights to sell my eBook for 90 days. That means that I would somehow have to stop Smashwords (and all of their distribution channels) from selling my book. I don't even know how to do that, especially on a temporary basis.

Hey, I want my book in as many markets as possible. Why would I pull it out, to...