On average, 8 out of 10 people will read headline copy, but only 2 out of 10 will read the rest. This is the secret to the power of your title, and why it so highly determines the effectiveness of the entire piece.

Remember, every element of compelling copy has just one purpose - to get the next sentence read. And then the sentence after that, and so on, all the way down to your call to action. So it's fairly obvious that if people stop at the headline, you're already dead in the water.

Start with a compelling headline, straightforward sub-headline and benefit-oriented bullet points. The dominant user behavior is scanning, so design for it accordingly.