Google WebSite Optimizer does A/B testing and is free. You have to have AdWords account though. I recommend you to create AdWords account anyway and try to adve

Google WebSite Optimizer does A/B testing and is free. You have to have AdWords account though. I recommend you to create AdWords account anyway and try to advertise your service that way. You would have to spend some money, but not much, and the time you would save would probably worth it.