JK Rowling Misunderstands the Magic of Sharing

"It is not reasonable, or legal, for anybody, fan or otherwise, to take an author's hard work, re-organize their characters and plots, and sell them for their own commercial gain. However much an individual claims to love somebody else's work, it does not become theirs to sell."

Sorry, darling, it is not only reasonable to produce this kind of reference work, it is actually beneficial - to you, and the world. Not least because it discourages people from coming up with killer one-liners like this:

The big news from the world of Harry Potter isn't that Dumbledore is gay. It's that J.K. Rowling is greedy.