Usability.gov

http://usability.gov/

Usability.gov is a one-stop source for government web designers to learn how to make websites more usable, useful, and accessible. The site addresses a broad range of factors that go into web design and development. The site will help you to:

* Plan and design usable sites by collecting data on what users need

* Develop prototypes

* Conduct usability tests and write up results

* Measure trends and demographics

Ask Tog: First Principles of Interaction Design

The following principles are fundamental to the design and implementation of effective interfaces, whether for traditional GUI environments or the web. Of late, many web applications have reflected a lack of understanding of many of these principles of interaction design, to their great detriment. Because an application or service appears on the web, the principles do not change. If anything, applying these principles become even more important.

Bruce Tognazzini from here.