Lots of interesting facts! I think I knew most of these, except for the concert scene item. I remember watching Kill Bill after I saw AALCC (I had seen it previous to me watching it), and then instantly recognized the song and was so ecstatic to hear it somewhere else.
One thing i always wonder about is the 'novel'.. When websites talk about it, do they just mean the internet BBS as a whole? or was there an actual novel? I wasn't able to find information on it when I looked previously..
There was a novel.
You can purchase it in Amazon Japan.
But it hasnt been translated and i doubt it will be someday..
http://www.amazon.co.jp/gp/product/4043441053/ref=sib_rdr_dpThe actual link of the japanese BBS that Iwai made to create the chats appearing in the movie, BlueCat, Philia etc.. talking and posting about her still exists too.
"With Lily it is a bit complicated though... What really came first was the website... Iwai wrote into the BBS (as various characters) and other ("normal") people could write in too." Here it is:
http://www.lily-chou-chou.jp/holic/bbs/