Google AdWords announced release of a new tool Website Optimizer. With the new tool, advertisers will be able to test different website content, experiment with different headlines, copy, and images on their site in order to find out which combination results in the most conversions.
Google: "Over the coming weeks we'll be testing a new tool called the Website Optimizer that can help you find out which content will convert best on your site. Whether you define a conversion as a purchase or a newsletter sign-up, Website Optimizer allows you to experiment with different headlines, copy, and images on your site in order to find out which combination results in the most conversions. You can use this tool on your landing page or any page that represents a conversion.
At the end of each experiment, graphical reports show which version of your landing page users liked best, as measured by which variation had the highest conversion rate. So, if you're interested in increasing conversions, we think you'll find the Website Optimizer useful.
Using Website Optimizer to experiment with your landing page does not have any impact on your Quality Score, so long as you maintain the existing default landing page for the Ad Group. Once you make a change to your site based on the results, however, the Quality Score might change as with any other changes to your landing page. That said, if a change is good for your users, it is probably good for your Quality Score too."
Advertisers can sign up , however only a small number of advertisers will be selected for this beta. Selection will be based on a number of factors, including amount of traffic the landing page receives and the ability to begin testing quickly.