With Google’s new website optimizer tool you can easily perform landing page testing to find out which landing page your  visitors like the best.

You’ll be able to determine which of your landing pages receives the highest conversion rate. The tool is currently in beta test mode but Google plans to make it available to all Advertisers in the near future.

The website optimizer tool was designed to use with your Google Adwords campaigns. However, it will display results for all traffic to your website including search engine traffic or website traffic from other sources.

From what I can tell it will help you determine what on your landing page attracts clicks and traffic.  What on your landing page helps you retain website traffic and where visitors to your site are going.

Check it out at:

http://services.google.com/websiteoptimizer/