That was a long blog post to tell us that they are no longer entitled to valuable free API access. It was a mistake to think it would last. This story has been repeated so many times here. As soon as the author started making money (they conveniently excluded their sales revs), they should have negotiated a written contract for access for a fee. It could be cut of app revs or pure API charges. Also, I am sure some smart managers looked at all their free API giveaways and decided there we no longer useful to their business model.