Let the Games Begin!

Speculation Time (Update 3): Ok, the puzzle has been solved, but we still don't know what Pottermore is. For some reason, because it has JKR's signature on the website, I do not see it as being an RPG or social media or theme park. The registration could be a red herring. Could it be the Harry Potter Encyclopedia but released as an interactive website rather than a book?

Think about how JKR released the clues -- various fansites from across the world in many languages each containing a note that related to the books, magical creatures, or fandom -- all of which would be part of an encyclopedia!

JK Rowling said that fans wanted MORE details than she could have provided through the books. Is she putting it all there in a virtual environment?


Puzzle Solved (Update 2): It is Pottermore and fans are directed to view this website:

PotterMore.com (though there is nothing currently there but a placeholder)

and follow this Twitter feed: @PotterMore