With better usability, we should see greater use of information searches among novices and intermediates. Experts may also increase their usage. However, we see that the six months between surveys accelerated expert performance better than novice performance. The same GVU report offers this insight into the perceived value of Web-based shopping across all levels of user experience. Respondents gave these motivations for personal shopping of products and services.
Most categories offer usability design challenges above and beyond just providing the functions.