David Travis has just written a new book about e-commerce usability and in regards to this he has uploaded a few chapters and a fine usability survival kit, with a good test for verifying if your ecommerce solution is customer centred. He's also got a great example of real life usability from a car park machine in Stuttgart airport: Which button would you press to lift the barrier? Well - as you probably guessed it is the red button?!? Read the full story about how the german usability experts improved the process in 4 steps.... He also has examples of how to lock a toilet door in a train and how to do oven control.