If you're an author and you're active on Goodreads, be aware of this:
At Goodreads, we make it a priority to use book information from the most reliable and open data sources, because it helps us build the best experience for our members. To that end, we're making a major change.
Amazon's data has been great for us for many years, but the terms that come with it have gotten more and more restrictive, and we were finally forced to come to the conclusion that moving to other datasources will be better for Goodreads and our members in so many ways that we had to do it. It may be a little painful, but our aim is to make it as seamless as possible for all our members.
Amazon data that we will stop using includes data such as titles, author names, page counts, and publication dates. For the vast majority of book editions, we are currently importing this data from other sources. Once the imports are done, those few remaining editions for which we haven't found an alternative source of information will be removed from Goodreads.
Member ratings, reviews, and bookshelves are safe, but your data may be moved to a different edition of the book. If we can't find a matching edition, then your review will be attached to a book with no title or author. But the good news is that there's a way you can help.
There's more, but further down the post they do address the books published solely at Amazon:
There have been many questions about Kindle Editions and books in the KDP (Kindle Direct Publishing) program. As these editions are unique to Amazon, there are no alternative data sources. We anticipate keeping these, and will bend over backwards for all our authors who publish via Kindle to make sure their readers on Goodreads have a smooth transition.
If you're an author, it's in your best interest to make sure your books are rescued. If you're a reader, it's in your favorite authors' interest to make sure their books are rescued. Supposedly all of my titles are safe, though their covers and product descriptions have disappeared, which means I'll be very busy in the next week fixing all of that. If you're on Goodreads, be sure to click here to see any books you've read that may need saved.