Currently switching over from GR.
My GoodReads profile is: http://www.goodreads.com/ErikaWasTaken.
This list is in no way comprehensive, just a collection of blog-posts talking about Authors Behaving Badly. I did not include amazon- or GR-Reviews because a) there are far too many and b) often comments or whole reviews get deleted and in the end everything looks highly confusing and nobody knows what was actually going on. I simply don't have the time to check all these reviews to see what still makes sense for people who haven't been following them from the beginning.
Other Blogs/Blogposts of Interest
These are just some cases I know about because I followed discussion about this kind of author-behaviour. I'm sure there's more. If you know of any other links you think belong on this list (or think one of those links is inaccurate) drop a comment.