Joined: 24 Oct 06
09 Nov 06 2:20 pm
If you want to do some serious split testing, then you can opt for Google's Website Optimizer. Its still Beta I think, but I got an invite and its pretty incredible.
You can choose different headline, header image and body text and Google will mix and match and tell you which combo works best!
Its quite sophisticated but the results could be quite stunning if used well.
You can apply for an account and when you're approved, view the introduction video.