Henk 14 December 2010 I like the concept of testing your design. To many designers make something really beautiful, but it makes it also very hard to read/navigate the website. Using A/B split testing is a very good tool if you design a website. It is better to have a website design that is less attractive but that makes the visitor do where the website is created for, then to have a beautiful design where the visitor get confused. Very good ideas Cennydd. I liked it so much that I’ve just bought your book Undercover User Experience Design on amazon. I hope to find lots of more great ideas.