You remember Rita, the relentless, morally-challenged journalist Well, I have a theory that she stopped living in the magical world after people found out about her embellishing and outright lying. She went off to live with the muggles and fell on hard times, turning to writing the story of Harry Potter.
The Ministry of Magic just let her get on with it, knowing that no one would believe her. Which means JK Rowling is actually Rita Skeeter, and the whole story is true. Which also means, surely, that my Hogwarts acceptance letter is just delayed in the post. Right?