Often the sensational headlines are tested to work using many of the hot words that will help you write your headline. And many of them can simply be modified to fit your product. One final thought about headlines. Keep the headline type large and bold but with a type style that is easy to read. Keep your subheadline smaller, much less bold and of course easy to read.
Comprehension is the key here.
Too complicated a typeface or too bold and you'll lose the reader. Plus you want the reader to transition into the text and the subheadline is like a bridge to the text. Then make the subheadline so interesting that the reader wants to find out more and read the text of the ad you've written. And finally, make the type easy to read. Follow these tips and you'll find yourself writing many strong headlines in the future.