Hi, I'm Jeff. I am a direct responser copywriter who specializes in internet marketing. Google has made the Website Optimizer available to anyone with an AdWords account. This multivariate testing tool allows for testing copy on landing pages. I'm curious if any other copywriters are either currently using this tool or plan to use it, and what kind of improvements you are seeing.
Copywriters of content writers working on Adsense keyword-rich content? From my point of view such kind of tools are only useful for such task.