Everyone probably already knows this, but I'm going to share because it was rather exciting.
I was on Jo Rowling's website and was playing around with the stuff on her very messy desk when an idea popped into my head: What would happen if I dialed "MAGIC"  on the little cell phone and pressed the green call button? How about this?
So I followed the link and up came...
A page of Philosopher's Stone [written in 1992] that contains an abandoned plot line! Aaaaargh! *runs around*
Tip: These copies aren't very big. It's well worth going to the site yourself and trying it.
It's a bit hard to read, but I thought it was fascinating enough to share. I wonder what else she might reveal on the site [maybe about future books]?