How Many Words-Per-Minute Do You Read?

I've always been known to be a quick reader. (In technical terms, a book snarfer) According to this test, I can read about 400-450 words per minute, which also happens to be the theoretical rate at which the average human being can comprehend speech. Of course, I'm definitely not as good a listener as I am a reader. Maybe my visual cortex has co-opted some of my auditory cortex.