Accessibility
Our websites work for a broad range of users in a variety of situations:
turn off javascript, enlarge the text, change the font, view at 600x400,
input via a keyboard, switch or mouse, output via a screen reader.
Discrimination on the basis of disability maybe illegal, websites should be accessible.
Architecture
Information is complex, and your clients want a simple and easy interface.
Use standards, and use them intelligently.
Navigation
Keep the interface consistent and ensure the content reflects the interests of your clients.
Keep it simple.
Graphics
Symbols have a place on every website, ensure they communicate without a gloss.
A decade of experience designing symbols for people who have difficulty communicating.