I know a lot of people do A/B testing. In my constant search of always trying to get the best conversions I have found that A/B/C/D testing gives me better results than just A/B. Has anyone here tried A/B/C/D testing?
Most people are doing A-X testing. There is actually a big debate going on about what the new form of testing will be once marketers hit A-Z testing. It looks like the consensus is that we'll be moving over to the Chinese alphabet to accommodate more complex testing.
My version of dullspace does multivariate B/C/D/E testing* on your traffic -- not my traffic, your traffic. I call it ninja-ninja SE4 ninja testing. THREE NINJAS, STEALING YOUR TRAFFIC IN THE NIGHT.