May not be best time to access goodreads.
*sigh*
The former goodreads librarian in me mourns how this will destroy years of careful kindle edition tracking and alternate cover editions. On the bright side, with all the data issues, if anyone has ever wanted to become a goodreads librarian or been turned down, it could be a good time to reapply—a good reason to list for "why" you want to be a goodreads librarian is that you want to help with all the newly imported data issues.
For non kindle editions, new books will never "steal" an isbn or isbn13. Because Amazon is considered the authority on ASINs, Kindle Editions are handled somewhat differently. During the import, if a Kindle Edition's ASIN matches a book in the GR catalog but does *not* match on title or author, the ASIN will be removed from the GR record and attributed to the new book.
Guess a lot of kindle authors are getting an early Christmas present in their fight to yank older kindle editions off member shelves.
I don't care how much "authority" amazon has over kindle editions and asin numbers; past experience says their data feed is horrible. So does recent tests for importing the data (not that they are exactly receptive to what librarians checking the test results are telling them the issues are). Good grief, amazon can't even decide if an author name is "first last" or "last, first" much less how to handle the juniors and such.
I hope goodreads doesn't blame booklikes sync for this data move like they did when they moved data from gr-assets to amazon cloudfront servers. That was just nasty and uncalled for.