Finally...
I have finished reading the 608-page book and can now resurface from my little Potter world again. For the past few days I have been avoiding all forms of media/human contact - blogs, websites, newspapers, TV news, even the MTR, for fear that some horribly evil-hearted people (like You-Know-Who) may, just for the fun of seeing other people (i.e. me) suffer, give the ending away.
Hurrah, I am free now!