I got this tip via Seth Godin's blog.
Way cool. Now Google can tell you if your website is optimised to convert your visitors into paying customers.
Conversion refers to your visitors taking an action you desire, such as clicking a "buy now" link and following instructions until they reach a page only a buyer can.
Now Google offers you a way to test various combinations of headline, image, body copy, etc., until you hit the best combination to convert visitors.
Available for free for a limited time, check it out at: