If you are serious about increasing the amount of money that you are making online then you need to be doing A/B testing all of the time. You should be making and testing different landing pages for your website. You should be testing the content that you are putting on your website, as well as the design.There is really nothing that you should not be testing on your website on a regular basis to see if you cannot improve your ROI.
If you are doing or considering doing paid search advertising then A/B testing must be a part of that plan otherwise you are wasting money. When running an AdWords campaign you should also be testing the text of the ad. You should set it up so that you can alternate the landing page that visitors see.
You should basically never stop testing once you have a created a website and are paying for visitors to land on it.You will find those very small things such as colors, wording and design can have a huge impact on your conversation rate.
If you are seeking some help with some A/B testing I would be more than willing to take a look at your campaign and see what you are testing and offer my input. Just give me a call at (405)714-3397. We are a local Stillwater web design agency