Harry Potter speculation site

Even hovering over the link to the website can be spoilerific, so if you don’t want to risk your enjoyment of Half-Blood Prince, don’t hover over this link, let alone follow it.

Here’s the link.

There’s some pretty interesting stuff on that site, including some clues I hadn’t noticed, and a few conclusions I didn’t think of making. I especially like the “Unanswered Questions” page.