What do you usually do when you stumble across an ugly-looking and poorly optimized website? Do you stay and continue struggling against all odds in order to find the information you came for? Unlikely. Why would you even bother if there are so many other websites out there? Your time is valuable, and so is the time of other internet users. This is why good usability is considered to be the cornerstone of web design, determining whether a site will serve its intended purpose.