Additionally

If you're going to make some sort of hilarious joke about spoiling the book, I would like to read your joke, especially if its super-funny.

However, if you title your blog post something like "Harry Potter 7 Spoilers! Seriously!" I'm not going to read it, even on the pretty good chance you're making a joke.

Gawker, I'm looking in your direction.

[Ed Note: Please note that I linked the above Gawker story, assuming its some sort of joke. I didn't actually read it, in case it turned out to be real spoilers.]