It's been known for years that usability testing can dramatically improve products. But with a typical price tag of $5,000 to $10,000 for a usability consultant to conduct each round of tests, it rarely happens.

In this how-to companion to Don't Make Me Think: A Common Sense Approach to Web Usability, Steve Krug spells out a streamlined approach to usability testing that anyone can easily apply to their own Web site, application, or other product. (As he said in Don't Make Me Think, "It's not rocket surgery".)

Using practical advice, plenty of illustrations, and his trademark humor, Steve explains how to:

• Test any design, from a sketch on a napkin to a fully-functioning Web site or application
• Keep your focus on finding the most important problems (because no one has the time or resources to fix them all)
• Fix the problems that you find, using his "The least you can do" approach