What method did you use to break up with someone? Why?

The “Dear John” letter was an old classic. I suppose it’s been superseded by the “Dear John” email. You can break up over the phone. You could do it in person. Maybe there’s other ways I don’t know about. Facebook announcement? MySpace? Fluther?

So which method did you use, and why did you choose to use that method? What was the situation? How did it go?