Google Website Optimizer (Beta)
The goal of the new website optimizer is to increase visitor conversion rates and satisfaction by testing different site content.
Website Optimizer, Google's free multivariate testing application, helps online marketers increase visitor conversion rates and overall visitor satisfaction by continually testing different combinations of site content (text and images). Rather than sitting in a room and arguing over what will work better, you can save time and eliminate the guesswork by simply letting your visitors tell you what works best.

Website Optimizer is a self-service application designed to give marketers full control over testing. Not only does Website Optimizer - integrated into AdWords - test messages on all site traffic (not just AdWords traffic), but it also works alongside Google Analytics and all third party site analytics packages.
Note: When we tested the site, there where was no overview demo yet, let's hope Google fixes this soon.
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Optimizing Landing Page Copy
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