What happened is that the majority of the content of the book is word for word copied from the HP books with no new information or analysis added to it. They claim it's a scholarly work because experts from a big named college say so.

As for the website, the design and graphics really do belong to Steve. As for the content, it belongs to everyone and no one with the encourage of JKR. I thought that was the spirit of fandom. That's why JKR choked on her coffee, because of an old and edited claim of ownership of everything on that site.