GUI (Graphical User Interface) is always intuitive to those who design it.

There’s no better way to debug a web application, than to use it regularly yourself.

If you want honest user feedback, ask your website analytics. Usage patterns never lie.

It will demystify the user interface with navigation. It will be easy to use. Normal people will be able to get value out of it.

The key utility measure is user happiness. Speed of response and the size of the index are factors in user happiness. It seems reasonable to assume that relevance of results is the most important factor: blindingly fast, useless answers do not make a user happy. However, user perceptions do not always coincide with system designers' notions of quality. For example, user happiness commonly depends very strongly on user interface design issues, including the layout, clarity, and responsiveness of the user interface, which are independent of the quality of the results returned.

We're second to them in market size, but now I think it is clear that our user interface has the largest market share in the world.