Google has announced that AdWords is no longer a requirement for Website Optimizer. In fact, you can now go to google.com/websiteoptimizer and register, for free, to use Website Optimizer, even if you do not have an AdWords account.
Now, you can use Website Optimizer to not just A/B test your AdWords landing pages, but also test your Yahoo landing pages, your banner landing pages, and different elements throughout your web site to improve conversions and desired actions from your users.
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