Simple, Time-based

John Leavitt

For a website of mine a years ago, I wanted to try out a few different seasonal headers and see if they affected conversion at all. I set up a script that assigned the header based on the IP address of the user. A couple weeks later, I was able to do some quick log processing and find that one of the five headers produced much higher click through than the others... like more than double.

Non-random assignment can be quite useful.