Dien -
> Get some strangers to read your sales
> letter. For example, you could try people in
> a pub or restaurant. Make sure that the
> people you ask to read your sales letter
> seem similar to the type of people you are
> targeting (as best as you can).... Then ask
> them if they think it's a good sales letter.
> If they answer, "Yes, it's a great
> sales letter," then guess what? Your
> sales letter is a failure! But ...
> If they say, "Where can I get one of
> these?" -- then your sales letter is a
> success! Send it out!
FWIW, I think Dan discusses this method in the book I mentioned.
Rick Smith, "The Net Guerrilla"
The Guerrilla Product Developer's Forum