The way to do this is by using the Taguchi method. Calculating all those pages manually is of course well-nigh impossible, but thanks to a rather clever equation known as the Taguchi equation and it's nifty application to the world of online marketing, testing all those pages has become eminently possible.

The Taguchi method was originally used to maximise the efficiency of a manufacturing process, and helped manufacturers identify the following:

- Internal failures

- The cost of waste

- The cost of remanufacture

- External failures

- The cost of responding to consumer complaints

- The cost of issuing a recall

- The cost of shipping products back to base

- The cost of refunds

- The cost of a damaged market name

Applied to a webpage, for example a sales page or a landing page, the Taguchi method can be used to test the efficiency of almost every aspect of a page's design and layout, for example:

- General design

- Site Architecture

- Unique Selling Point

- List Price & discount price

- Benefits

- Calls to Action

and almost any other variable the user may want to test. Once the user has entered those initial variables, using the Taguchi method it becomes possible to generate thousands of different webpages using minimal initial information, and then systematically test the best combinations live, on your website, until you find one that gets the best results. Those results could mean anything - for example increased newsletter sign-ups or increased forum participation, but in most cases webmasters are using the Taguchi method to systematically discover web pages that generate substantially higher conversions and higher sales.

Webmasters have experienced anything between 20%-300%+ gains from using this method, and many of the software tools that use the Taguchi method are zero-risk, typically carrying 30-60 day guarantees giving the user ample time to get results. And if results for any reason aren't forthcoming, you can get an unconditional refund.

The Taguchi method does not argue that you save money by cutting back very early on in the manufacturing of your product. What it does argue, however, is that manufacturers can actually put more money into the starting point and engineering of their product and make a bigger return at the end, assuming you look at the biggest picture.

For webmasters the same principle applies, by putting more work into testing sales and landing pages when you promote your website, the return at the end is substantially higher. Unlike the manufacturing process however, where testing product lines can be enormously costly, for webmasters testing web pages is an exceptionally cheap, time-efficient process that has an almost certain chance of generating substantial returns. Plug-in your initial variables, setup the appropriate Taguchi program to do its work, and unearth landing pages that generate increasingly higher sales and conversions, or you don't pay. In short, split-testing 5000+ pages and finding the most profitable one is a practical reality that any webmaster can put into practice right away.