[my favorite bit is the disclaimer at the end: "Just in case anyone needs the following disclosure: As an author who has books published by Macmillan (and whose books are at this writing still delisted by Amazon), I am not a wholly disinterested party. And yes, by this point, I expect I will be the very last Macmillan author Amazon gets around to relisting."]
And for once on the internet, the comments so far are thoughtful and polite, not ranting screeds of either flavor.
EtA: Amazon.com stock is down close to 10% at at noon EST.
EtA2: word from several sources says that Amazon also, unannounced, pulled sample chapters of Macillan books from Kindles. Yes, if you already downloaded it.. they took it away. Without notice or warning. Shades of 1984, anyone?
*points to anyone who picks up the reference. Hint: it's not literary.