That’s the beautiful power of the P.S. When you are writing any sort of direct mail letter, always include a P.S. The two most critical elements of your letter are the headline and the P.S. Ask yourself this question — if they only glance at this document, what is the one thing you want them to know? Guess where it belongs? Yup — the P.S.
I will say that I disagree with her third tip — use two P.S.’s. I think it waters down the effectiveness of the technique. But that’s nitpicking. Overall, I think she’s right on the money.
I’ll also give you a warning — a P.S. does not work as well on a blog post because so often it will appear below the scroll. That doesn’t mean you shouldn’t use one, just don’t expect it to have the same effect as it would on a traditional direct mail letter.