Woot! The site design is almost nonexistent, but it works for me.
Yesterday I hadn’t even thought of the site, other than “hmm, I wish it existed”. Now, depending on how well the DNS records have propagated out, it’s real.
http://accio.info/ : the fastest way to get official and unofficial information about the Harry Potter universe. (And you can narrow your search to official sources only, or look for fanfiction, or consult organized references like the Reader’s Guide and the Harry Potter Lexicon.)