Amazon was recently notified that two of the books in its Kindle catalog were pirated. The company responded by removing the books from the catalog and also deleting every purchased copy. The uproar was significant, with many people being surprised that retroactive deletion was even possible. Amazon has since apologized and promised it will never do this again. To Amazon’s credit, they did refund the purchase price. But this being the United States of America, there has to be a lawsuit involved.
Update: The lawsuit has been settled, and Amazon has agreed to legally binding terms on which it can retroactively delete content.