This blogger is still awaiting official confirmation, but it appears that Amazon is shutting down its customer forums.
The Amazon forums are retiring October 6, 2017. Amazon would like to thank the members of this community for contributing to the discussion forums. As we grow and evolve, we encourage you to explore Goodreads Groups for books and Spark for other ways to engage with your interests.
I have not seen that banner myself, and Amazon PR has not yet confirmed the news, so at this point we don't really know what is going on.
Update: It's official. Amazon is closing the forums on 13 October, next Friday.
Second Update: Or not. What Amazon didn't tell us was that they recently opened a new support forum which is going to replace the old.
If Amazon does follow through and kill its forums, it will b a loss to the local community but not a huge surprise.
The real question isn't why Amazon would do that but why not. The forums were never closely integrated with Amazon's site (I always had to Google for Amazon support forums in order to find them). Also, Amazon may have provided a space for its customers to congregate, but I can't recall the last time I saw one of its customer service reps answer questions there.
Since the forums serve no clear purpose, why would Amazon keep them open?
image by dclay