This is fantastic! I read the Silmarillion when I was in high school, and while it was a bit difficult to get through at times, I was in complete awe of the world Tolkien had built. Seeing it all laid out like this is amazing.
(OT, but it looks like the page's character encoding is broken. And of course Firefox decided to ditch the ability to set the correct charset manually. The "Repair Text Encoding" button isn't working for me.)