Top, Bottom, or Scattered?

I agree with John Gruber’s (@gruber) blog post from July 2007 on the topic of formatting responses to email. I love this part:
Daring Fireball: On Top:

Does it take more time to edit the portions of quoted text included in your reply? Yes. So does spell-checking and proofreading. It also takes time to shower and brush your teeth each day.

(Via The Brooks Review)